Pulsar TC-10B, User Manual

Page: 65 / 190

3. Replace the transmitter module into the
chassis and proceed to the next step.
5.8 Check TC–10B Receiver
Margin Setting using Remote
Carrier Signal
1. At the Power Supply Module, turn the power
“ON”.
2. Arrange for a received signal from the remote
end.
3. Sensitivity setting:
On the Receiver module perform the following to
complete the setting:
a) Hit “SET” twice until the display reads
“SET SENS?”
b) With the remote signal being received (at
the remote end, push the “HL button on
the keying module), depress “SET” again.
c) If you’re not adjusting the 15dB margin,
depress “SET” again. If you are, then
depress “RAISE” or “LOWER” as
required to adjust it up or down 5dB, then
press set.
d) If you are not going to adjust an external
carrier level meter, depress “SET”.
Otherwise, press “RAISE” or “LOWER”
as required, then press set.
e) Unkey the remote carrier set & key the
local carrier set by depressing the HL
TEST button on the keying module and
pressing the “SET” button on the receiver
module.
f) This completes the setting of the receiver
margin.
4. If you are just checking the sensitivity setting,
read the Tri-color bar graph CLI while
receiving a remote signal.
5.9 Select Optional Checkback
Module Conditions
If you are using the optional Universal Checkback
Module, select the desired conditions for the
module’s operation.
5.10 Prepare TC–10B for
Operation
1. Be sure that power is “ON” at the Power
Supply Module.
2. Replace the cover on the TC–10B control
panel. Secure both latches by pushing inward
and sideways until the cover is secure. You
may lock the latches in place using meter
seals.
This completes the “Routine Alignment”
procedure. The TC–10B is ready to be put into
operation.
October 2003 Page 5–7
Chapter 5. Installation / Adjustment Procedures
5
NOTES:
1. The foregoing procedure adjusts the Receiver
margin to the recommended 15dB value.
2. The Receiver bargraph CLI meter reading
should be 0dB at this time.
3. In three-terminal line applications, the margin
adjustment procedure should use the weaker of
the two received signals.
4. When applying the TC–10B with a phase
comparison relay, do not readjust the Receiver
level when keying with a square wave signal.
The CLI will read around -10dB, but this is an
average reading of the on and off square wave.
The receiver will still maintain the 15dB margin.
The CLI reading is only accurate for a non-
amplitude modulated signal.
NOTE
When placing the TC–10B into service, refer to the
System manual that is appropriate for the relay
system you are using with the TC–10B system.