ADC Broadband System manual 254

ADCP-61-471 • Issue 4 • June 2000 • Section 2: Operation and Maintenance

DLP-572

Page 1 of 1

VERSION D (OR LATER) HLXC VOLTAGE TO HLXR TEST

Summary: This procedure provides instructions for measuring DC voltage and DC current being supplied by the Version D (or later) HLXC to the Version D (or later) HLXR. The V+, V–, I+, and I– jacks provide monitor access to the voltage and current supplied to the HDSL Repeater (HRX) (if present) and HLXR through the HDSL span. Current measurements are taken as the voltage drop across a 10 ohm resistor.

Measure DC Voltage

1.Select –VDC on the VOM and, if so equipped, select a voltage scale of 300 volts or higher.

2.Refer to Figure 572-1. 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 VDC (with no HRX present), or approximately 260 VDC (with HRX present).

Measure DC Current

Note: The current test is not available on the Version G module.

3.Select –VDC on the VOM and, if so equipped, select the millivolt scale.

4.Insert the black test probe into the I– test jack, and insert the red test probe into the I+ test jack. The millivolt reading divided by 10 is the DC current in milliamps.

Stop! You have completed this procedure.

HH

L L

XX

	STAT	2X	STAT
	RMT/		RMT/
	HSKP		HSKP
	LPBK		LPBK
DS1	LOS	DS1	LOS
	BER		BER
HDSL	CONT	HDSL	CONT
	SNR		SNR
L1	LOSW	L1	LOSW
	BER		BER
L2	LOSW	L2	LOSW
	BER		BER
I-	V -	I-	V-
I+	V+	I+	V+

	H
	L
	X
	STAT
	RMT/
	HSKP
	LPBK
DS1	LOS
	BER
H	CONT
	SNR
D	LOSW
S L1	BER

LLOSW

L2 BER

2X

V+

V–

6770-A11395-A12391-A

Version D HLXC	Version E HLXC	Version G HLXC
	Figure 572-1. HLXC Module Front Panels

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© 2000, ADC Telecommunications, Inc.