Black Box BRTS-100 manual Check loop flow chart 2

Page 24

CHAPTER 4: Test Procedures

A

RED

SWITCH TO

REVERSE, DO

CONTINUITY TEST

LINE

CONTINUITY

TEST STATUS?

GRN

PUT BACK IN

NORMAL MODE,

PUT IN LEVEL

TEST MODE

LEVEL

TEST STATUS?

GRN

NT1 OR

SWITCH NOT

WORKING

GRN

TEST STATUS?

PROBLEM WITH

TX PAIR

	CONTINUITY
OPEN IN		GRN


RX PAIR
RX PAIR	TEST STATUS?			B
	TEST STATUS?			B
		RED
		RED
	OPEN IN
	TX PAIR

RED	SIGNAL
	LEVEL TOO
	LOW

Figure 4-6. Check loop flow chart (2 of 3).

23

Image 24

Contents BRTS-100 Isdn Test Set FCC Statement BRTS-100 Isdn Test SET NOM Statement Trademarks Used in this Manual Contents Specifications How to Use This Manual IntroductionOverview Features 100 EstConnecting the Unit OperationBRTS-100 Isdn Test Set controls and indicators Passive BUS Powering Up the Unit Controls and Indicators Feature ButtonsIndicators Modes of Operation Test Status PASS/FAIL Lights Reflects test statusTest Procedures Test Configuration 1 Point-to-Point NT1 FigureTest Procedures Comprehensive Troubleshooting Procedure Comprehensive troubleshooting flow chart 1 Comprehensive troubleshooting flow chart 2 Check Power Phantom Conclusion LightCheck Power Check LoopTest Procedures Check loop flow chart 1 Check loop flow chart 2 Check loop flow chart 3 Test Procedures Passive Bus Configuration Check Terminations Passive Bus-Check TerminationsTest Procedures Proper device terminations diagram Pair Reversal Pair reversal flow chart 1 Pair reversal flow chart 2 10. Pair reversal diagram Monitor 11. Monitor flow chart Power-Source Indicators Technical ReferenceActivation/deactivation procedure Activation/Deactivation ModesLine Test/Transmit See Figure Receive TestLevel Test Transmit and line test AC Impedance DC ContinuityAC impedance Speaker Two Test Set units used for tracingAppendix Maintenance Battery ReplacementPin Jack Replacement Figure A-2. Replacing the 8-Pin Jack ConnectorsCopyright 2002. Black Box Corporation. All rights reserved