Chapter 2 Functional Description
V1553B UserÕs Manual
The 1553 bus signals are input/output via front panel connectors J1 (Channel 1, Bus A) , J2 (Channel 1, Bus B),
J3 (Channel 2, Bus A), and J4 (Channel 2, Bus B). There is also a front panel time tag connector, J5. Table
2.2.3b lists the 1553 bus pinouts, Table 2.2.3c lists the signals on the time tag connector.
Table 2.2.3b 1553 Connector Pinouts (J1 - Bus 1A, J2 - Bus 1B, J3 - Bus 2A, J4 - Bus 2B)
Pin Number
Pin Function
1
1553 Bus -, Input to Transceiver
2
1553 Bus + Input to Transceiver
3
Bus Shield (to GND)
Table 2.2.3c Time Tag Connector Pinouts (J5)
Pin Number
Function
1
TCLK_RTN, Return for external
Time-Tag clock, signal GND
2
1000PPS, External Time-Tag clock,
TTL buffered input
3
Spare
Power is provided via the VMEbus P1 connector. The V1553B shall require the following DC voltages:
+5V DC (500 mA max.)
-12V DC (200 mA max.)
Total power dissipation is less than 5 watts given a 25% 1553 bus duty cycle.
Page 2-8
© 1996 PEP Modular Computers
June 22, 1998
