Pulsar TCF-10B, Системное руководство, Страница: 73 / 249

April 1997 Page 5–11
Chapter 5. Acceptance Tests
5
Rcvr Logic CLI/Disc Optional
LEDs. LEDs EM Outputs Solid State Outputs
Low
Cbk Cbk Trp Sig
Grd Trp Trp Noise LLev 1 2 3 4 5 6 Noise Trp Grd 2 Cont
5) Set input frequency to 250.500 kHz (EWB), or 250.250 kHz (WBWS), or 250.100 kHz (NB or
WBNS); or required fre 500 Hz (EWB), or required fre 250 Hz (WBWS), or
required fre 100 Hz (NB or WBNS). Remove signal from chassis. Observe the “TRIP”
LED on the Receiver Logic module, and the “TRIP 2” SS Output. Neither should
blink when signal
is removed. Observe states as follows:
OFF OFF OFF ON ON ( open ) + V* 0 V 0 V 0 V 0 V CL
6) Close SW2-4 and open SW2-5 (GBT without override). Reconnect the signal to the chassis.
Observe states as follows:
ON OFF OFF OFF OFF CL CL CL OP OP OP 0 V + V* 0 V + V* 0 V OP
7) Set input frequency as shown in Step 3 (above). Observe states as follows:
OFF OFF ON OFF OFF ( open ) 0 V + V* + V* 0 V 0 V OP
8) Set input frequency as shown in Step 4 (above). Observe states as follows:
OFF ON ON OFF OFF OP OP OP CL CL CL 0 V + V* + V* 0 V + V* OP
9) Set input frequency as shown in Step 3 (above). Observe states as follows:
OFF ON ON OFF OFF OP OP OP CL CL CL 0 V + V* + V* 0 V + V* OP
10) Close SW2-1 and SW2-2 (500 ms). Set input frequency to 250.500 kHz (EWB), or 250.250 kHz
(WBWS), or 250.100 kHz (NB or WBNS); or required fre500 Hz (EWB), or required
fre250 Hz (WBWS), or required fre100 Hz (NB or WBNS). Observe states as
follows:
ON OFF OFF OFF OFF CL CL CL OP OP OP 0 V + V* 0 V + V* 0 V OP
11) Remove signal from chassis. Observe the “TRIP” LED and the “TRIP 2” SS Output. Both must
blink when signal is removed.
Table 5–9. 2-Frequency Directional Comparison or Direct Transfer Trip Units (Only) Testing (Cont’d).
* + V (Nominal) outputs equals the voltage applied to the TB1-1, usually station battery.
Good
Channel
OFF
ON
ON
ON
ON
ON
OFF