Spectracom TPRO-cPCI, User Manual, Page: 12 / 46

Spectracom Corporation TPRO-cPCI/TSAT-cPCI
Synchronizable Timecode Generator User Manual 2-2
2.2 Bus Connector
The CompactPCI
®
bus connector (J1) is not soldered to the board. This is normal. The
connector is designed to be press-fitted into the board.
2.3 External Connections
Only those functions that are actually used need to be connected. Always turn the computer's
power off before connecting or disconnecting.
2.4 GPS Antenna Connector (TSAT-cPCI Only)
The TSAT-cPCI is equipped with a high-density, 15-pin plug connector, labeled
"GPS ANTENNA", which connects to the GPS antenna via the supplied cable. Spectracom
cables include shielding to meet EMI requirements.
Use of other cables is not
recommended.
When power is first applied, the board sends initialization commands to the receiver/antenna.
For this reason, do not disconnect and reconnect the antenna while power is applied.
2.5 Timing Connector
Both versions of the board have a DB-15 socket connector, labeled "TIMING". The pinout for
this connector is the same for both TPRO-cPCI and TSAT-cPCI, as follows:
Table 2.1—Timing Pinouts
Pin Function Type
1 Time Code Input+ Differential Analog
2 Timecode Input– Differential Analog
3 Signal Ground ——
4 Time Code Output Single-ended Analog
5 Signal Ground ——
6 Match Output TTL Output
7 Signal Ground ——
8 Oscillator RS-422 Output
9 In-Sync Output Open Open Collector
10 Time-Tag Input TTL Input
11 1PPS Sync Input TTL Input
12 1PPS RS-422 Output
13 1PPS RS-422 Output
14 Heartbeat Output TTL Output
15 Oscillator Output- RS-422 Output
This pinout is different than Spectracom's TPRO/TSAT-PCI series boards.
2.6 Breakout Cable
A breakout cable assembly is supplied with each board to access the most commonly-used
features. This cable consists of a 15-pin plug and five BNC sockets. Standard boards are
supplied with breakout cable Number 0810545.