User's Manual

System Start-UpPlanning and PreparationIntroduction

MCPS2135 System Operation 21

4. If used, verify that the MCPS2135 address is set correctly.

+ WARNING: The RF output of the MCPS2135 should be connected to a 50-ohm

load before DC power is turned on. The load must be capable of dissipating at

least 500 watts average power and 6,300 watts of peak power.

After mechanical and electrical installation tasks are complete, the MCPS2135 is

ready for power-on check.

1.44.4 Power Up the MCPS2135

∗ Caution: Read and understand all of the following steps before taking any

action.

. Note: The MCPS2135 should be powered on and enabled before the RF input

power is applied.

1. Switch on the DC input power to the MCPS2135. Measure the input

voltage at the bus bar connections at the rear of the unit and verify it is

27VDC. Adjust the power supply if necessary.

Following the power-up self-test, the MCPS2135 AMM POWER LED

should be GREEN, indicating that the unit is functional and that in input

voltage is between 24 and 28 VDC. If the POWER LED is amber, red, or

does not light, turn off the DC input power and correct the power supply

fault.

The ENABLE switch should be “ON”. The MCPS2135 RF modules will

automatically be ENABLED. All four LEDs on each MCPA module

should be GREEN.

To DISABLE an RF module, set the front panel ENABLE/DISABLE

switch to DISABLE; the ENABLE LED will then be RED.

2. Wait 5 minutes for the MCPS2135 to reach a stable operating temperature

and to charge the real-time clock backup power. DO NOT apply

commercial traffic signal power during this time.

3. If the MCPS2135 is connected to a remote operations center via one of

the rear panel interface connections, verify no alarms have been reported.

4. Verify that all MCPS2135 status LED indicators remain GREEN.

5. If any LED indicators are AMBER or RED, then RF modules are

disabled or there is a problem which must be remedied before continuing.

Refer to section 6, Troubleshooting.

∗ Caution: Before applying RF input power to the MCPS2135, verify that the

applied RF input power for a single channel and the sum of all channels is

below the calculated maximum rated RF input.