Black Box BRTS-100 manual Check loop flow chart 3

Page 25

BRTS-100 ISDN TEST SET

B

CHECK FOR SHORT

IN TRANSMIT PAIR

PUT BACK IN

NORMAL MODE,

PUT IN IMPEDANCE

TEST MODE

LINE IMPEDANCE

	RED		NT1 NOT
TEST STATUS?			TERMINATED
TEST STATUS?			OR SHORT ON
			OR SHORT ON
			TX PAIR
	GRN
	GRN
PROBLEM
WITH NT1

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

24

Image 25

Contents BRTS-100 Isdn Test Set FCC Statement BRTS-100 Isdn Test SET NOM Statement Trademarks Used in this Manual Contents Specifications Introduction How to Use This ManualOverview 100 Est FeaturesOperation Connecting the UnitBRTS-100 Isdn Test Set controls and indicators Passive BUS Controls and Indicators Feature Buttons Powering Up the UnitIndicators Test Status PASS/FAIL Lights Reflects test status Modes of OperationTest Configuration 1 Point-to-Point NT1 Figure Test ProceduresTest Procedures Comprehensive Troubleshooting Procedure Comprehensive troubleshooting flow chart 1 Comprehensive troubleshooting flow chart 2 Phantom Conclusion Light Check PowerCheck Loop Check Power Test Procedures Check loop flow chart 1 Check loop flow chart 2 Check loop flow chart 3 Test Procedures Passive Bus-Check Terminations Passive Bus Configuration 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 Technical Reference Power-Source IndicatorsActivation/Deactivation Modes Activation/deactivation procedureReceive Test Line Test/Transmit See FigureLevel Test Transmit and line test DC Continuity AC ImpedanceAC impedance Two Test Set units used for tracing SpeakerBattery Replacement Appendix MaintenanceFigure A-2. Replacing the 8-Pin Jack Connectors Pin Jack ReplacementCopyright 2002. Black Box Corporation. All rights reserved