GCP5000 (GCE) INSTALLATION, CALIBRATION AND SYSTEM OPERATIONAL CHECK
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6-2
SIG-00-22-02 JUNE 2022 (Revised September 2022)
Version: B.1
6.2.2 Receiver Calibration
WARNING
VERIFY THAT FOLLOWING ARE AS SPECIFIED BY THE
RAILROAD’S OR AGENCY’S APPROVED WIRING OR
INSTALLATION DIAGRAM. FAILURE TO DO SO MAY LEAD TO
INCORRECT OR UNSAFE OPERATION OF THE TRACK CIRCUIT.
1.
PSO MODULE SOFTWARE
2.
TRANSMITTER FREQUENCY AND ADDRESS FORMAT
3.
RECEIVER PICKUP AND DROP DELAYS
4.
RECEIVER FREQUENCY AND ADDRESS FORMAT
IF ANY RECEIVER IS CALIBRATED IN POOR BALLAST
CONDITIONS, IT MUST BE RE-CALIBRATED WHEN BALLAST
CONDITIONS IMPROVE.
DO NOT ATTEMPT TO CALIBRATE WITH CAB SIGNAL
TRANSMITTING.
FAILURE TO FOLLOW THE RAILROAD’S OR AGENCY’S APPROVED
WIRING OR INSTALLATION GUIDELINES REGARDING RECEIVER
SETTINGS AND CALIBRATION MAY LEAD TO POSSIBLE UNSAFE
OPERATION OF THE TRACK CIRCUIT.
PRIOR TO TESTING FOR, AND SETTING RECEIVER THRESHOLD
(BROKEN RAIL DETECTION), ENSURE THERE ARE NO TRAINS IN
THE SUBSTATION BLOCK AND ALL IMPEDANCE BONDS,
CROSSBONDS, AND TRACTION RETURN ARE CONNECTED PER
DESIGN.
AFTER CALIBRATION, VERIFY THAT THE PSO CIRCUIT DE-
ENERGIZES WHEN SHUNTED WITH THE APPROPRIATE
CALIBRATION RESISTANCE (0.06, 0.2, 0.3, 0.4, OR 0.5 OHMS).
FAILURE TO DO SO MAY LEAD TO INCORRECT OR UNSAFE
OPERATION OF THE TRACK CIRCUIT.
FOLLOWING INSTALLATION OR AFTER ANY RECEIVER MENU
CHANGES HAVE BEEN MADE, RECALIBRATE THE RECEIVER AND
TEST FOR PROPER OPERATION PER THE REQUIREMENTS
SPECIFIED IN TABLE 6-2 AND TABLE 6-3.