Free Notice (Other) - District Court of Federal Claims - federal

NAVAL REGIONAL C~RACTING

Case 1:02-cv-00796-FMA

CENTER

Document 46-25

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g. DATA SIG ACQ IND. DATA SIGNAL ACQUIRED INDICATE is a black status signal r/nat is generated in the multiplexer; it is used by the IG to turn on the receive indicator lamp. DATA SIG ACQ IND is output from the multiplexe~ as SIG ACQ LAMP. The signal goes to a ground level when a burst wit21 data present is received in the time slot associated with the I/O port; when no burst or burst with no data present is received, the signal remains open. When open, +6 VDC is present (via the receive indicator lamp). h. GROUND IN TRANSMIT. GROUND IN TRANSMIT is a black status signal that is generated in the multiplexer; it is used by the IG to turn on the transmit indicator lamp. GROUND IN TEANSMIT is output from the multiplexer as TX ACK LAMP. The signal goes to a ground level within five milliseconds after the receipt of DATA KEYLINE if the multiplexer is prepared to accept XMT DATA. The signal is open any time the multiplexer is not prepared to accept data and when DATA KEYLINE is open. When open, +6 VDC is present (via the transmit indicator lamp). 5-4.4.5 Merqed Net Functional Interface Description. The FLTSAT NBSV user terminal interfaces with the AN/WSC-5(V) and the TD-1271B/U via the digital sharing device (DSD) in merged net operation. These interfaces are discussed in the following subparagraphs. 5-4.4.5.1 ON-143(V)/USQ to DSD Functional Interface Description. The interface signals between the IG and the DSD (via the CV-3928/FSC level converter) are discussed below. a. DATA KEYLINE. and multiplexer not in transmit. DATA KEYLINE is used by the DSD to key the I/0 port. The signal is +6 VDC in transmit and It passes through the level converter unaf-

transceiver -6 VDC when fected.

b. XMT CLOCK. TRANSMIT CLOCK is a black clock signal that is provided by the station clock; it is used to clock XMT DATA out of the IG. The signal levels of XMT CLOCK are +__6 VDC. It passes through the level converter unaffected. c. XMT DATA. TRANSMIT DATA is a black (encrypted) digital data stream that is clocked out of the IG on the low-to-high transition of XMT CLOCK. The signal levels of ~4T DATA are +__6 VDC. It passes through the level converter unaffected, d. RCV CLOCK. RECEIVE CLOCK is a black clock signal that is generated by the transceiver or multiplexer; it is used to clock RCV DATA into the IG. The signal levels of RCV CLOCK are +__6 VOC. It passes through the level converter unaffected. e. RCV DATA. RECEIVE DATA is a black (encrypted) digital data stream that is clocked into the IG on the high-to-low transition of RCV CLOCK~ The signal levels of RCV DATA are ~6 VDC. It passes through the level converter unaffected. f. DATA MODE CHANNEL BUSY. DATA MODE CHANNEL BUSY indicates that the transceiver or multiplexer is generating RCV DATA and RCV CLOCK. DATA MODE CHANNEL BUSY is a black control signal with signal levels of +6 VDC in receive and -6 VDC when idle. This signal is output from the multiplexer as AMENDMENT 0007

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SIG ACQ and from the transcelver as OUTPUT DATA TRANSFER LL. DATA MODE CHANNEL BUSY is passed through the DSD to the IG via the level converter. The signal is passed Cnrough ~he level converter and also converted to ground/open to provide a DATA SIG ACQ IND input to the IG. DATA SIG ACQ IND is used to turn on the receive indicator lamp. g. TX ACK. TRANSMIT ACKNOWLEDGE indicates that the transceiver or multiplexer is ready to accept ~4T DATA. TX ACK is a black control signal with signal levels of +6 VDC in transmlt and -6 VDC when not in transmit. This signal is output from the transceiver as MODe4 READY LL. TX ACK is passed through the DSD to a level converter. The signal levels are converted to ground/open to provide a GROUND IN TRANSMIT input to the IG. GROUND IN TRANSMIT is used to turn on ~he transmit indicator lamp. 5-4.4.5.2 DSD to AN/WSC-5(V) Functional Interface Description. The interface signals between the DSD and the transceiver are discussed below. a. DATA KEYLINE. DATA KEYLINE is used by ere transceiver to place it in transmit. The signal is +6 VDC in transmit and -6 VDC when not in transmit. This signal is input to the transceiver as BASEBAND KEYLINE. b. ]tMT CLOCK. TRANSMIT CLOCK is a black clock signal that may be provided by the star_ion clock or the multiplexer; it is used to clock XMT DATA into the transceiver. The signal levels of XMT CLOCK are +6 VDC. c. XMT DATA. TRANSMIT DATA is a black (encrypted) stream that is clocked into the transceiver on the low-to-high XMT CLOCK. The signal levels of ~4T DATA are +6 VDC. digital data transition of

d. RCV CLOCK. RECEIVE CLOCK is a black clock signal ~hat is generated by the transceiver; it is routed through the DSD to the IG. It is used by the IG to clock RCV DATA into the IG. RCV CLOCK is also rou~ed through the DSD to the multiplexer as ~-~T CLOCK; it is used to clock ~,~T DATA into the multiplexer. The signal levels of RCV CLOCK are +6 VDC.

e. RCV DATA. RECEIVE DATA is a black (encrypted) digital data stream that is clocked out of the transceiver on the high-to-low transition of RCV CLOCK. RCV DATA is routed through the DSD to the IG. It is also routed through the DSD to the multiplexer as ~,[T DATA. The signal levels of RCV DATA are +6 VDC. f. DATA MODE CHANNEL BUSY. DATA MODE CHANNEL BUSY indicates that the transcelver is generating RCV DATA and RCV CLOCK. DATA MODE CHANNEL BUSY is a black control signal with signal levels of +6 VDC in receive and -6 VDC when idle. This signal is output from the transceiver as OUTPUT DATA TRANSFER LL. DATA MODE CHANNEL BUSY is passed through the DSD to the IG. It is also passed to the multiplexer as DATA K~YLINE. g. TX ACK. TP~ANSMIT ACKNOWLEDGE indicates that the transceiver is ready to accept ~-[T DATA. TX ACK is a black con~roi signal wi~h signal levels of +6 VDC in transmlt and -6 VDC when not in transmit. This signal is output from the transceiver as MODEM READY LL. 5-4.4.5.3 DSD to TD-1271B/U Functional Interface Descrlprion. The interface signals between the DSD and the multiplexer are discussed below. AMENDMENT 0007 K - 91

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O

a. DATA KEYLINE. DATA KEYLINE is used by the multiplexer to key the I/O port. The signal is *6 VDC in transmit and -6 VDC when not in transmit. Thi~ signal is input to %he multiplexer as ~MIT REQ. b. ~MT CLOCK. TRANSMIT CLOCK is a black clock signal that may be provided by the station clock or the transceiver; it is used to clock XMT DATA into the multiplexer. The signal levels of XMT CLOCK are +-6 VDCo This signal is input to the multiplexer as INPUT CLOCK. c. XMT DATA. TRANSMIT DATA is a black (encrypted) digital data stream that is clocked into the multiplexer on the low-to-high transition of XMT CLOCK. The signal levels of XMT DATA are +_6 VDC. This signal is input to the multiplexer as SERIAL INPUT DATA. d. ~CV CLOCK. RECEIVE CLOCK is a black clock signal that is generated by the multiplexer; it is routed through the DSD to the IG. It is used by the IG to clock RCV DATA into the IG. RCV CLOCK is also routed through the DSD to the transceiver as XMT CLOCK; it is used to clock XMT DATA into the transceiver. The signal levels of RCV CLOCK are ~5 VOC. This signal is output from the multiplexer as OUTPUT CLOCK A. e. RCV DATA. RECEIVE DATA is a black (encrypted) digital data is clocked out of the multiplexer on the high-to-low transition of RCV DATA is routed through the DSD to the IG. It is also routed DSD to the transceiver as XMT DATA. The signal levels of RCV DATA This signal is output from the multiplexer as OUTPUT DATA.

stream that RCV CLOCK. through the are ~5 VDC.

f. DATA MODE CHANNEL BUSY. DATA MODE CHANNEL BUSY indicates that the multiplexer is generating RCV DATA and RCV CLOCK. DATA MODE CHANNEL BUSY is a black control signal with signal levels of +6 VDC in receive and -6 VDC when idle. DATA MODE CHANNEL BUSY is routed through the DSD to the IG. It is also routed through the DSD to the transceiver as DATA KEYLINE. This signal is output from the mul~iplexer as SIG ACQ. g. TX ACK. TRANSMIT ACKNOWLEDGE indicates that the multiplexer is ready to accept X~T DATA. TX ACK is a black control signal with signal levels of +6 VDC in transmit and -6 VDC when not in transmit. 5-4.4.6 Transmit Sequence. The transmission of information through the ON-~43(V)/USQ is initiated by the CV-3333/U providing PTT KEYLINE to the IG. This initietes the sequence of events discussed below. (Refer to Figure 5-2.) a. The IG, upon sensing PTT KEYLINE from the CV-3333/U, provides DATA KEYLINE to the satellite terminal and ~MT/RCV CLOCK to the crypto (provided DATA MODE CHANNEL BUSY is idle). b. The IG then initiates an internal 115-millisecond time delay. This delay allows for transmitter turn-on and stabilization (40 +10 milliseconds) and, concurrently, the following crypto preparation sequence: (I) At 89 milliseconds into the ~5-millisecond removes XMT/RCV CLOCK from the crypto, At 6.6 milliseconds after crypto provides PREP to the crypto, clock delay, the IG

(2)

removal,

the

IG

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(3)

Approxlmately 20 mliiiseconds after the PREP command, IG restores ~-IT/RCV CLOCK to the crypto. enaDles the crypto to output

the

for receive

c. Cryp%o clock restoration crypto syncnronizatlon.

84~ bits

d. After 834 bits have CLOCK to the

been counted

by the crypto,

it passes

GATED

e. Upon receiving XMT CLOCK, ~ne CV-3333/U onds of sync Dits, then valid data (XMT DATA).

outputs

200

millisec-

f. XMT DATA is routed through the crypto and black IG interface to the satellite terminal for transmission. In non-D~MA operation ~T DATA is routed to the AN/WSC-5(V) or AN~qSC-3, in D~4A opera,ion to the TD-1271B/U and in merged net operation to both the AN/WSC-5[V) and TD-1271B/U via the DSDo 5-4.4.7 Recelve Seouence. The reception of signals relayed by the satellite causes the ON-]43(V)/USQ =o perform a structured sequence that ensures valid data is output to the CV-3333/U. The sequence of events is discussed below. (Refer to Figure 5-3.) a. The satellite terminal demodulates a signal into RCV supplies DATA MODE CHANNEL BUSY to the IG. In merged net operatlon, CHANNEL BUSY is routed, via the DSD, to the non-receiving satellite as DATA K~YLINE placing the satellite terminal in the transm~ mode. and RCV CLOCK from the receiving satellite terminal is routed to the ting satellite terminal as XMT DATA and XMT CLOCK. DATA and DATA MODE terminal RCV DATA =ransmit-

b. At the same time, the IG provides ~,IT/KCV CLOCK to the crypto and RCV DATA is clocked into the crypto. ~he crypto removes GATED CLOCK from the IG until it receives 841 bits of preamble. c. The crypto, GATED CLOCK to the IG. having received 841 bits of preamble, restores

d. The IG waits three clock periods, valid data (RCV DATA) into the CV-3333/U. e. When no more signal DATA MODE CHANNEL BUSY. f, transmit. 5-4.5 so operate (v)6/USQ). The CV-3333/U is is received,

restores

KCV CLOCK

and clocks

the satellite

terminal

removes

now

free

to

stay

in

receive

or

to

go

into

OTCIXS USER TERMINAL EQUIPMENT INTERFACES. The m~croprocessor used and control the OTCIXS subsystem is incorporated in the IG (0N-143 The OTCIXS interface with ~he satellite terminal may be accom-

plished via line modems or a DSD. The following subparagraphs discuss the s~gnals required for dnls interface, if used, the interface slgnals between the ON-143(V)6/USQ and the line modems or DSD are the same as those between the 0N-143(V)6/USQ and the AN/WSC-5(V) or AN/WSC-3, unless otherwise noted. Table 5-22 lis~s ~he signals discussed below; FO-67 diagrams interface signal flow. AMENDMENT 0007 K - 93

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5-4.5.1 AN/UGC-136BX (or Equivalent) to ~-143(V)6/L~Q Functional Interface Description. The following subparagraphs discuss the interface signals between the AN/UGC-136BX (or equivalent) and the ot~-143(v)6/USQ. Interfaces low level (+6 VDC). a. F~EYBOARD DATA. KEYBOARD DATA is generated by the teletype keyboard and applied to the IG. KEYBOARD DATA is a red signal with voltage levels of +6 VDC. bo PRINTER DATA. to the teletype equipment. of +6 VDC. PRINTER DATA is generated by the IG and applied PRINTER DATA is a red signal with voltage levels

5-4.5.2 Tactical Data Processor or TADIXS ON-143(V)6/USQ to OTCIXS ON-143 (v)6/USQ Functional Interface Description. The interface signals between the TDP or TADIXS ON-143(V)6/USQ and the OTCIXS IG are discussed below. a. TDP/TADIXS XMT DATA. TDP/TADIXS TRANSMIT DATA is a red signal with voltage levels of +6 VDC. The signal originates at the TDP or TADIXS IG and contains all data, control and status information pertaining to the TDP. b. TDP/TADIXS RCV DATA. TDP/TADIXS RECEIVE DATA is a red signal with voltage levels of +6 VDC. The signal originates at the OTCIXS IG and contains all data, control and status information pertaining to the OTCIXS IG. 5-4.5.3 CV-3333/U to ON-143(V)6/USQ Functional fer to paragraph 5-4.4.1 for interface description. 5-4.5.4 ON~43(V)6/U~Q Interface Description. are discussed below. to The Interface Description. Re-

TSEC/KG-36 (or ~EC/KG-35, interface signals between

TE~/KG-84) Functional the IG and the crypto

a. PREp. PREP is generated by the IG and applied to the crypto. PREp is a red control signal that is used by the crypto to place it in a transmit state. The signal is 0 VDC in transmit and approximately +6 VDC when not in transmit. b. GATED CLOCK (TRANSMIT MODE). This function applies when the IG is in transmit. GATED CLOCK is a red signal gated by the crypto; it clocks XMT DATA into the crypto on the low-to-high transition of GATED CLOCK. The signal levels of GATED CLOCK are +6 VDC. c. GATED CLOCK (RECEIVE MODE). This function applies when the IG is in receive. GATED CLOCK is a red signal gated by the crypto; it clocks RCV DATA out of the crypto on the high-to-low transition of GATED CLCCK. The signal levels of GATED CLCCK are +6 VDC. d. ~MT DATA (RED). TRANSMIT DATA is a red (unencrypted) digital data stream; it is clocked into the crypto by GATED CLCCK. The signal levels of XMT DATA are +6 VDC. e. RCV DATA (RED). R~ECEIVE DATA is a red (decrypted) digital data stream; it is clocked out of the crypto by GATED CLOCK. The signal levels of RCV DATA are +6 VDC.

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f. ALAR/4 I:IDICATE. ALARM INDICATE is generated by the crypto and applied to the iG. ALAR/,! L'~DICATE is a red status s~gnai than indicates the crypto is in an alarm state. The crypto does not cunput (black) XMT DATA when it is in an alarm state. To come out of the alarm state, ~he crypto must be commanded by MIAR to reset its alarm. A signal level of +6 VDC indicates that the crypto is in an alarm state. A signal level of 0 VDC indicates that the crypto is not in an alarm state. g. MIAR. ~.~ESSAGE INDICATE ALARM P~ESET is a red control signal; it is gated by the IG and applied to the crypto. MIAR is a 10-millisecond pulse that resets the crypto. The reset condition of this signal is 0 VDC and the normal state is +6 VDC. h. XMT/RCV CLOCK. TRANSMIT/RECEIVE CLOCK is a black clock signal that is generated in the IG. if an external clock is selected, XMT/RCV CLOCK is phase locked to ~~T CLOCK in transmit and RCV CLOCK in receive. The signal levels of ~4T/RCV CLOCK are +6 VDC. i. XMT DATA (BLACK). TRANSMIT DATA is a black (encrypted) digital data stream; it is clocked out of the crypto by the low-to-high transition of XMT/RCV CLOCK. The signal levels of XMT DATA are +6 VDC. XMT DATA is +6 VDC when the crypto is not in transmit. j. RCV DATA (BLACK). RECEIVE DATA is a black (encrypted) digital data stream; it is clocked into the crypto by the high-to-low transition of XMT/RCV CLOCK. The signal levels of RCV DATA are +6 VOC. RCV DATA is +6 VDC when the crypto is not in receive. 5-4.5.5 ON-143(V)6/USQ Description. The interface discussed below. to AN/WSC-5(V) or AN/WSC-3 Functional Interface signals between the IG and the transceiver are

a. DATA KEYLINE. DATA KEYLINE is used by the transcexver to place it in transmit. The signal may be +6 VDC in transmit, -6 VDC when not, or ground in transmit and open when not. DATA KEYLINE must be ground in transmit, open when not when operating with the AN/WSC-3. This signal is input to the AN/WSC-5(V) transceiver as BASEBAND KEYLINE. b. XMT CLOCK. TKANSMIT CLOCK is a black clock signal that may provided by the station clock, transceiver or IG; it is used by the IG clock ~T DATA out of the IG. The signal levels of ~4T CLOCK are +6 VDCo be to

stream CLOCK.

c. XMT DATA. TRANSMIT DATA is a black (encrypted) digital data that is clocked out of the IG on the low-to-high transition of ~T The slgnal levels of ~T DATA are +6 VDC.

d. RCV CLOCK. RECEIVE CLOCK is a black clock signal that is generated by the transceiver; it is used by the IG to clock RCV DATA into the IG. The s~gnal levels of RCV CLOCK are +6 VDC. e. RCV DATA. RECEIVE DATA is a black (encrypted) stream that is clocked out of the transceiver on ~he high-to-low RCV CLOCK. The signal levels of RCV DATA are +6 VDC. digital data transition of

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f. DATA MODE CHANNEL 5USY. DATA MODE CHANNEL BUSY indicates that the transceiver is generating RCV DATA and RCV CLOCK. DATA MODE CHANNEL BUSY is a black control signal with signal levels of ÷6 VDC in receive and -6 VDC when idle. This signal is output from the AN/WSC-5(V) transceiver as OUTPUT DATA TRANSFEK go DATA SIG ACQ IND, DATA SIGNAL ACQUIP~ED INDICATE is a black status signal that is generated in the transceiver; it is used by the IG to turn on the receive indicator lamp. DATA SIG ACQ IND is at ground in receive and open when idle. When open, +6 VDC is present (via the receive indicator lamp). This signal is output from the AN/WSC-5(V) transceiver as OUTPUT DATA TRANSFER. h. GROUND IN TRANSMIT. GROUND IN TRANSMIT is a black status signal that is generated in the transceiver; it is used by the IG to turn on the transmit indicator lamp. GROUND IN TRANSMIT is at ground in transmit and open when idle. When open, +6 VDC is present (via the transmit indicator lamp). This signal is output from the AN/WSC-5(V) transceiver as MODEM READY. 5-4.5.6 ON-~43(V)6/USQ NOt defined. to TD-~27~B/U Functional Interface Descri~tioq,.

5-4.5.7 Transmit Sequence. The transmission of information through the ON-~43(V)6/USQ is initiated by the IG providing DATA KEYLINE to the satellite terminal. This initiates the sequence of events discussed below. (Refer to Figure 5-2.) a. The IG initiates an internal ~5-millisecond time delay. This delay allows for transmitter turn-on and s~abilization (40 +10 milliseconds) and, concurrently, the following crypto preparation sequence: At 89 milliseconds into the ~%5-millisecond removes XMT/RCV CLOCK from the crypto, (2) At 6.6 milliseconds after crypto provides PREP to the crypto, clock delay, the IG

removal,

the

IG

(3)

Approximately 20 milliseconds after ~he PEEP IG restores XMT/RCV CLOCK to the crypto. enables the crypto

command,

the

for receive

b. Crypto clock restoration crypto synchronization.

to output

841 bits

c. After 834 bits have CLOCK to the IG. d. DATA). Upon receiving

been counted

by the crypto,

it passes

GATED

GATED

CLOCK,

the

IG

outputs

valid

data

(XMT

e. XMT DATA is routed through the satellite terminal for transmission. 5-4.5.8 lite causes Receive Sequence. the ON-143(V)6/USQ

the crypto

and black

IG interface

to

The reception Of signals to perform a structured

relayed by the satelsequence that ensures

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valid data is output ~o ~/ne user terminal is discussed below. (Refer to Figure 5-3.)

equipment.

The sequence

of events

a. The satellite terminal demodulates a signal provides a DATA :'lODE C~u~4NEL BUSY signal to the iG.

into

RCV DATA

and

b. The IG provides ~2~T/RCV CLOCK to the crypto and clocked into the crypto. The crypto removes GATED CLOCK from the receives 841 bits of preamble. c. T1~e crypto, GATED CLOCK to the IG. having received 841 bits of preamble,

DATA is until it

restores

d. The IG waits three clock periods, clocks valid data (RCV DATA) into the IG. e. When no more signal DATA MODE CHANNEL BUSY. f. is received,

restores

GATED

CLOCK

and

the satellite

terminal

removes

The IG is now free to stay in receive

or go into transmit.

5-4.6 TADIXS USeR TERMINAL EQUIPMENT INTERFACES. The microprocessor used to operate and control the TADIXS subsystem is incorporated in the IG (ON-143 (V)6/USQ). The TADIXS interface with the satellite terminal may be accomplished via line modems or a DSD. The following subparagraphs discuss the signals required for this interface. If used, the interface signals between the ON-143(V)6/USQ and the line modems or DSD are the same as those between the ON-143(V)6/USQ and the AN/WSC-5(V) or AN/WSC-3, unless otherwise noted. Table 5-23 lists the signals discussed below; F0-69 diagrams interface signal flow. 5-4.6.1 scription. below. Tactical Data Processor to ON-143(V)6/USQ Funct±onal Interface DeThe interface signals between the TDP and ~ne IG are discussed

a. TDP ~-~T DATA. TDP TRANSMIT DATA is a red signal with voltage levels of ~6 VDC. The signal originates at the TDP and contains all data, control and status information pertaining to the TDP. b. TDP RCV DATA. TDP RECEIVE DATA is a red signal with voltage levels of +6 VDC. The signal originates at the IG and contains all data, control and s~atus information pertaining to the IG. 5-4.6.2 CZIL~IXS ON-143(V)6/tEQ to TADIXS O~-I43(V)6/LEQ Functional Interface Description. The following subparagraphs discuss the interface signals between the OTCIXS ON-143(V)6/USQ and the TADIXS ON-143(V)6/USQ. This interface is requ%red for TADIXS ship-to-shore TDP data exchange. a. TADIXS ~C,IT DATA. TADIXS TKANSMIT DATA is generated at the TADIXS IG and applied to the OTCIXS IG. TADIXS XMT DATA is a red signal with voltage levels of +6 VDC. b. TADIXS RCV DATA. TADIXS RECEIVE DATA is generated at the O~CIXS IG and applied to the TADIXS IG. TADIXS RCV DATA is a red signal with voltage levels of +6 VDC. AMENDMENT 0007 K - 101

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EE~ 30-PL-OMI-O20/W~42-UHFSATCOM

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AMEHDMENT 0007

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7

7

7

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NAVAL REGIONAL

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5-4.6.3 interface

ON-143(V)6/USQ to TSEC/KG-64 Functional Interface signals between the IG and the crypto are discussed

Description. below.

The

a. PREP. PREP is generated by the IG and applied to the crypto. PREP is a red control signal that is used by the crypto to place it in a transmit state. The signal is 0 VDC in transmlt and approximately +6 VDC when not in transmit. b. GATED CLOCK (TRANSMIT :~ODE). This function applies when the IG is in transmlt. GATED CLOCK is a red signal gated by the crypto; it clocks XMT DATA into the crypto on the low-to-high transition of GATED CLOCK. The signal levels of GATED CLOCK are +6 VDC. c. GATED CLOCK (RECEIVE MODE). This function applies when the IG is in receive. GATED CLOCK is a red signal gated by the crypto; it clocks RCV DATA out of the crypto on the high-to-low transltion of GATED CLOCK. The signal levels of GATED CLOCK are +6 VDC. d. XMT DATA (RED). TRANSMIT DATA is a red (unencrypted) digital data stream; it is clocked into the crypto by GATED CLOCK. The signal levels of ~T DATA are +6 VDC. e. RCV DATA (RED). RECEIVE DATA is a red (decrypted) digital data stream; it is clocked out of the crypto by GATED CLOCK. The signal levels of RCV DATA are +6 VDC. f. ALARM INDICATE. ALARM INDICATE is generated by the crypto and applied to the IG. ALARM INDICATE is a red status signal that indicates the crypto is in an alarm state. T~e crypto does not output (black) XMT DATA when it is in an alarm state. To come out of the alarm state, the crypto must be commanded by MIAR to reset its alarm. A signal level of +6 VDC indicates that the crypto is in an alarm state. A signal level of 0 VDC indicates that the crypto is not in an alarm state. g.--MIAR" MESSAGE INDICATE ALARM F~ESET is a red control signal; it is gated by the IG and applied to the crypto. MIAR is a ~0-millisecond pulse that resets the crypto. The reset condition of this signal is 0 VDC and the normal state is +6 VDC. h. XMT/RCV CLOCK. TRANSMIT/RECEIVE CLOCK is a black clock signal that is generated in the IG. If an external clock is selected, ~T/RCV CLOCK is phase locked to ~MT CLOCK in transmit and RCV CLOCK in receive. The signal levels of XMT/RCV CLOCK are +6 VDC. i. XMT DATA (BLACK). TRANSMIT DATA is a black (encrypted) digital data stream; it is clocked out of the crypto by the low-to-high transition of ~T/RCV CLOCK. The signal levels of ~.~T DATA are +6 VDC. ~T DATA is +6 VDC when the crypto is not in transmit. j. RCV DATA (BLACK). RECEIVE DATA is a black (encrypted) digital data stream; it is clocked into the crypto by the high-to-low transition of XMT/RCV CLOCK. The signal levels of RCV DATA are +6 VDC. RCV DATA is +6 VDC when the crypto is not in receive.

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5-4.6.4 Descri~. discussed

ON-143(V)6/USQ The interface below.

to AN/WSC-5(V) signals between

or AN/WSC-3 the IG and

Functional Interface the transceiver are

a. DATA KEYLINE. DATA KEYLINE is used by the transceiver to place i~ in transmit. The signal may be +6 VDC in transmit, -6 VDC when not or ground in transmit, open when not. DATA KEYL!NE must be ground in transmit, open when not when operating with the AN/WSC-3. This signal is input to the AN/WSC-5(V) transceiver as BASEBAND KEYLINE. b. XMT CLOCK. TRANSMIT CLOCK is a black clock signal that may be provided by the station clock, transceiver or IG; it is used by the IG to clock XMT DATA out of the IG. The signal levels of XMT CLOCK are +__6 VDC. c. XMT DATA. TRANSMIT DATA is a black (encrypted) digital data stream that is clocked out of the IG on the low-to-high transition of XMT CLOCK. The signal levels of XMT DATA are +_.6 VDC. d. RCV CLOCK. RECEIVE CLOCK is a black clock signal that is generated by the transceiver; it is used by the IG to clock RCV DATA into the IG. The signal levels of RCV CLOCK are ~6 VDC. e. RCV DATA. RECEIVE DATA is a black (encrypted) stream that is clocked out of the transceiver on the high-to-low RCV CLOCK. The signal levels of RCV DATA are +__6 VDC. digital data transition of

f. DATA MODE CHANNEL BUSY. DATA MODE CHANNEL BUSY indicates that the transceiver is generating RCV DATA and RCV CLOCK. DATA MODE CHANNEL BUSY is a black control signal with signal levels of +6 VDC in receive and -6 VDC when idle. This signal is output from the AN/WSC-5(V) transceiver as OUTPUT DATA TRANSFER LL. g. DATA status signal that turn on the receive and open when ~dle. lamp). This signal TRANSFER. SIG ACQ IND. DATA SIGNAL ACQUIRED INDICATE is a black is generated in the transceiver; it is used by the IG to indicator lamp. DATA SIG ACQ IND is at ground in receive When open, +6 VDC is present (via the receive indicator is output from the AN/WSC-5(V) transceiver as OUTPUT DATA

h. GROUND IN TRANSMIT. GROUND IN TRANSMIT is a black status signal that is generated in the transceiver; it is used by the IG to turn on the transmit indicator lamp. GROUND IN TRANSMIT is at ground in transmit and open when idle. When open, +6 VDC is present (via the transmit indicator lamp). This signal is output from the AN/WSC-5(V) transceiver as MODEM P~EADY. 5-4.6.5 ON-143(V)6/USQ ***~ Not defined. to TD-1271B/U Functional Interface Description.

5-4.6.6 Transmit Seguence. The transmission of information through the ON-143(V)6/USQ is initiated by the IG providing DATA KEYLINE to the satellite terminal. This initiates the sequence of events discussed below. (Refer to Figure 5-2.)

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a. The IG initiates an internal il5-miilisecond tLme delay. This delay allows for transml~ter turn-on and s=abilization (40 +10 milliseconds) and, concurrently, =he fcllowing crypto preparation sequence: At 89 milliseconds into the %%5-millisecond removes ~,~T/RCV CLOCK from the crypto, At 6.6 milliseconds after crypto provides PREP to the crypto, (3) clock delay, the iG

removal,

the IG

Approximately 20 milliseconds after the PREP IG restores ~T/RCV CLOCK to the crypto. enables the crypto

command,

the

for receive

b. Crypto clock restoration crypto synchronization.

to output

841 bits

c. After 834 bits have been counted CLOCK to the IG. d. DATA} , e. XMT DATA is routed through the satellite terminal for transmission. Upon receiving GATED CLOCK,

by t_he cryp~o,

it passes

GATED

the

IG outputs

valid

data

(~~T

the crypto

and black

IG interface

to

5-4.6.7 Rece±ve Sequence. The reception of signals relayed by the satellite causes the ON-143(V)6/USQ to perform a structured sequence that ensures valid date is output ~o the user terminal equipment. The sequence of eventS is discussed below. (Refer to Figure 5-3.) a. The satellite a DATA MODE CHANNEL terminal demodulates a s~gnal BUSY signal to the IG. into RCV DATA and

provides

b. The IG provides XMT/RCV CLOCK to ~he crypto and RCV DATA is clocked into the crypto. The crypto removes GATED CLOCK from the IG ~tn~il it receives 841 bits of preamble. c. The crypto, GATED CLOCK to the IG. having received 84] bits of preamble, restores

clocks

d. The IG waits three clock periods, valid data (RCV DATA} into the IG, signal is received,

restores

GATED

CLOCK

and

e. When no more DATA MODE CHANNEL BUSY.

the satellite

terminal

removes

The IG is now free to stay in receive

or go into transmit.

5-4.7 SSIXS USER TL~{INAL EQUIPMENT INTERFACES. The SSIXS interface with the satellite terminal may be accomplished via line modems or a PSU. The following subparagraphs discuss t_he signals required for this interface. If used, ~ne interface s~gnals between the ON-~43(V)4/USQ and the line modems PSU are the same as those between the ON-143(V)4/USQ and the AN/WSC-5(V) AN/WSC-3, unless otherwlse noted. Table 5-24 lis~s the signals that are discussed below; FO-7] diagrams interface signal flow. AMENDMENT 0007 K - 107

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Case 1:02-cv-00796-FMA
NAVAL ~GIONAL CONT~G CENTER

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AMENDMENT 0007

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