Table of Contents
Advertisement
CCS800 | Service manual | Chapter 7 | Diagnostics and faultfinding
7.2.1
CTRL-L1
Depending of the voltage level of CTRL-L1 the ORM (override mode) is activated or the MAXNOM (maximum number
of delegate microphones) is activated.
7.2.2
CTRL-L2
Depending on the voltage level of CTRL-L2 the TEST mode, the AUTO mode, the TRMO (Temporary all delegate
microphone switched off) or RMO (all delegate microphones switched off) is activated.
Danger
Part of the power supply inside the CPSU carries potentially lethal voltages. Only touch parts
with well-insulated tools
7.3
Measuring Instructions for the CPSU
Introduction
The measurement procedure contains the following items:
7.3.1
Settings before you start measuring.
7.3.2
Internal Supply Voltages.
7.3.3
Phantom supply of the external symmetrical microphone input.
7.3.4
Supply current measurement.
7.3.5
Audio contribution to loudspeaker measurement.
7.3.6
Audio contribution to audio distribution measurement.
7.3.7
External microphone input to line out measurement.
7.3.8
Telephone-out, Line-out and Insertion-out measurement.
7.3.9
LINE-IN to REC-OUT Circuit measurement.
7.3.10
Recorder-in to Line-out measurement.
7.3.11
TELEPHONE-IN to LINE-OUT Circuit measurement.
7.3.12
Control line test with mode switch (A).
7.3.13
Control line test with mode switch (B).
7.3.14
System volume control test.
7.3.15
AUDIO CONTROL IN to LINE-OUT via AFS circuit of CPSU measurement.
7.3.16
Functional AFS test of the LBB 3310/10.
Use the diagrams (chapters 13.4- 13.7) to locate the measurement points (chapter 13.3) and components mentioned in the
measurement instructions.
Bosch Security Systems | 2005-01| 3922 880 21112
en | 22
Advertisement
Table of Contents
