Black Box BRTS-100 3.5 Modes of Operation

13

CHAPTER 3: Operation

NOTE: In reverse mode, the light indicators are opposite.

AUXILIARY POWER LIGHT — Indicates the presence and polarity of

auxiliary power.

Green light — Auxiliary power present, normal polarity.

Red light — Auxiliary power present, reverse polarity.

No light — No auxiliary power present.

TEST STATUS (PASS/FAIL) LIGHTS — Reflects test status.

INITIATE LIGHT (yellow LED) — The INITIATE button and light are

used in testing modes. When performing certain test functions, this LED

indicates that the INITIATE button must be pushed.

3.5 Modes of Operation

You can select a mode of operation by turning the selector dial

(see Figure 3-1).

LINE TEST — Verifies that a terminal will be able to access the D channel.

NOTE: After selecting this function with the selector, depress the INITIATE button and the test

will begin.

Pass — Good line.

Fail — Bad line.

RECEIVE — Monitors activity on the terminal’s receive pair.

Pass — Test Set is in SYNCH with the NT1.

Fail — Test Set is not in SYNCH with the NT1.

Contents

Main OCTOBER 1994 TS675A BRTS-100 ISDN Test Set BRTS-100 ISDN Test Set Page NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD NOM STATEMENT Page CONTENTS Contents 1. Specifications CHAPTER 2: Introduction 2. Introduction 2.1 Overview 2.2 How to Use This Manual Figure 2-1. The BRTS-100 ISDN Test Set. 2.3 Features 3. Operation 3.1 Overview 3.2 Connecting the Unit COLOR SIGNAL PIN NUMBER Figure 3-1. BRTS-100 ISDN Test Set controls and indicators. BRTS-100 ISDN Test Set Figure 3-2. Connecting the Test Set for point-to-point or passive-bus configurations. PASSIVE BUS POINT-TO-POINT 3.3 Powering Up the Unit 3.4 Controls and Indicators Feature Buttons Indicators 3.5 Modes of Operation 4. Test Procedures 4.1 Overview Figure 4-1. Test Configuration 1. Figure 4-2. Test Configuration 2. Figure 4-3. Test Configuration 3. 4.2 Comprehensive Troubleshooting Procedure 17 Figure 4-4. Comprehensive troubleshooting flow chart (1 of 2). Comprehensive Troubleshooting Flow Chart Figure 4-4. Comprehensive troubleshooting flow chart (2 of 2). CHAPTER 4: Test Procedures 4.3 Check Power 20 Figure 4-5. Check power flow chart. 4.4 Check Loop CHECK POWER Page Figure 4-6. Check loop flow chart (1 of 3) 22 CHECK LOOP Figure 4-6. Check loop flow chart (2 of 3). B Figure 4-6. Check loop flow chart (3 of 3). B Page 26 4.5 Passive BusCheck Terminations Figure 4-7. Passive bus flow chart. PASSIVE BUS CONFIGURATION CHECK TERMINATIONS BRTS-100 should be in NORMAL mode Passive Bus Configuration Check Terminations Page Figure 4-8. Proper device terminations diagram. CHAPTER 4: Test Procedures 4.6 Pair Reversal Figure 4-9. Pair reversal flow chart (1 of 2). Figure 4-9. Pair reversal flow chart (2 of 2). Figure 4-10. Pair reversal diagram. CHAPTER 4: Test Procedures 4.7 Monitor 34 Figure 4-11. Monitor flow chart. Monitor Assumes CHAPTER 5: Technical Reference 5. Technical Reference Figure 5-1. Power source indicators. 5.1 Power-Source Indicators 5.2 Activation/Deactivation Modes Figure 5-2. Activation/deactivation procedure. CHAPTER 5: Technical Reference Figure 5-3. Info frames. Line Test/Transmit Receive Test Level Test D Activity Figure 5-5. D Activity. CHAPTER 5: Technical Reference Figure 5-6. CCITT 1.430. 5.3 AC Impedance 5.4 DC Continuity Figure 5-7. AC impedance. +- Figure 5-8. DC continuity. CHAPTER 5: Technical Reference 5.5 Speaker Figure 5-9. Two Test Set units used for tracing. Appendix: Maintenance Battery Replacement Figure A-1. Battery replacement diagram. APPENDIX: Maintenance 8-Pin Jack Replacement Figure A-2. Replacing the 8-Pin Jack Connector(s).