ITC 220 Base Station, Locomotive & Wayside Radio Transceiver Field Service Guide PN 0046300120 Rev. A
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Table 10 Base Station Transceiver input power parameters
Parameter
24 VDC version
48 VDC version
Nominal DC Power Input Voltage
24 VDC
48 VDC
Operational range
21-27 VDC (+/–12.5%)
42-54 VDC (+/–12.5%)
Damage limit
30 VDC
60 VDC
Current draw (while transmitting
rated power)
7.5 A – typical while transmitting
into 50 Ohm load
4.0 A — typical while transmitting
into 50 Ohm load
Table 11 Locomotive Transceiver input power parameters
Parameter
Value
Nominal DC Power Input Voltage
74 VDC
Operational range
45-100 VDC (+35%/–40%)
Damage limit
120 VDC
Current draw (while transmitting rated power)
1.8 A – typical while transmitting into 50 Ohm load
Table 12 Wayside Transceiver input power parameters
Parameter
Value
Nominal DC Power Input Voltage
13.6 VDC
Operational range
10.9-15.5 VDC (+14%/–20%)
Damage limit
17 VDC
Current draw (while transmitting rated power)
7.5 A – typical while transmitting into 50 Ohm load, 10 A maximum
5.9.2
MEASURE AND ADJUST PEAK RF POWER OUTPUT
Equipment used to measure and adjust peak RF power output
1.
A power supply capable of providing:
24 VDC Base Station Transceiver: 24 VDC and a current of 11 Amperes
48 VDC Base Station Transceiver: 48 VDC and a current of 6 Amperes
Locomotive Transceiver: 45-100 VDC and a current of 4 Amperes
Wayside Transceiver: 13.6 VDC and a current of 10 Amperes
2.
4 GHz spectrum analyzer that includes a DQPSK digital demodulation option
Or
1.
Agilent #4417A power meter to measure peak and average power or equivalent and Agilent E9325A Peak and
Average Power Sensor –65 to +20 dBm or equivalent
2.
10 MHz signal reference