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ADCP-61-471 • Issue 4 • June 2000 • Section 2: Operation and Maintenance
2-208
© 2000, ADC Telecommunications, Inc.
DLP-568
Page 1 of 2
VERSION C HLXC VOLTAGE TO HLXR TEST
Summary:
This procedure provides instructions for measuring DC voltage and DC current being
supplied by the Version C HLXC to the HLXR. The V+, V–, I+, and I– jacks provide monitor
access to the voltage and current supplied to the HLXR through the HDSL span. These
measurements are taken at the HLXC’s test jacks across a 10 Ohm resistor.
Measure DC Voltage
1. Select –VDC on the VOM and, if so equipped, select a voltage scale of 0 to 200 volts.
2. Refer to Figure 568-1 for a front panel drawing of the HLXC. Insert the black test probe
into the V– test jack, and insert the red test probe into the V+ test jack. A typical meter
reading should be approximately 130 volts depending on the cable length in the loop.
Measure DC Current
3. Select –VDC on the VOM and, if so equipped, select the millivolt scale. The voltage in mV
measured between the I+ and I– jack is equal to the current in mA.
4. Insert the black test probe into the I– test jack, and insert the red test probe into the I+ test
jack. The meter should typically read between –550 and –900 mV (55 to 90 mA).
Stop! You have completed this procedure.