Symmetricom 5071A Assembly And Service Manual

2. Service
Assembly/Module Diagnostic Trees (Diagnostic Section 3)
83
A2 CBT Controller Diagnostic Tree
(A/M Subsection 1)
This subsection describes the A2 Assembly diagnostic tree. The tree
is divided into four functional subsections as follows:
1. A2 Hot-Wire Ionizer tree
2. A2 Thermistor tree
3. A2 Mass-Spectrometer tree
4. A2 Cesium-Oven tree
Each of the functional subsections is designed to isolate a fault to one of the
following assemblies:
 A2 CBT Controller
 A7 Interface
 A17 Cesium-Beam Tube (CBT)
Refer to the A2 CBT Controller Assembly pinouts shown below for A2J1 and
A2J2 when any A2 tests require connection to either CBT or A2 J1 or J2 pins.
For A2J1:
Pin 1
    
   
Pin 9
For A2J2:
Pin 1
       
      
Pin 15

Symmetricom 5071A Specifications

General

Brand	Symmetricom
Model	5071A
Category	Measuring Instruments
Language	English