Black Box BRTS-100 manual AC impedance

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BRTS-100 ISDN TEST SET

21KHz

GEN

STATUS INDICATORS

				AC IMPEDANCE
	+	-				DEVICE
			~1vpp			UNDER
			~1vpp			TEST
						TA/NT
					3	100 Ω
					6	SW1
			HIGH DETECT	FILTER
		APPROX. 150 OHMS
				PRE AMP	R-SENSE
	SAMPLE		WINDOW		100 Ω
	&		WINDOW		100 Ω
	&		COMPARATOR
	HOLD		COMPARATOR
	HOLD

ISPC I.C.

Figure 5-7. AC impedance.

VDD	9V BATTERY
VDD
LOOP
DETECT		LOOP RESISTANCE
		0 - APPROX. 5K	Ω
		MAX. AMOUNT 5mA
		3
		6
	100	Ω
	BRTS-100

Figure 5-8. DC continuity.

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Contents BRTS-100 Isdn Test Set FCC Statement BRTS-100 Isdn Test SET NOM Statement Trademarks Used in this Manual Contents Specifications Overview How to Use This ManualIntroduction 100 Est FeaturesOperation Connecting the UnitBRTS-100 Isdn Test Set controls and indicators Passive BUS Indicators Powering Up the UnitControls and Indicators Feature Buttons 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 PowerTest 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 procedure Level Test Line Test/Transmit See Figure Receive 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