CMU  Contents of Chapter 8 
1100.4903.12 I-8.1  E-8 
Contents 
8 Maintenance and Interfaces ................................................................................ 8.1 
Maintenance......................................................................................................................................8.1 
Cleaning the Outside................................................................................................................8.1 
Storing and Packing.........................................................................................................................8.1 
Hardware Interfaces.........................................................................................................................8.2 
GPIB Bus Interface ..................................................................................................................8.2 
Characteristics of the Interface ................................................................................................8.2 
Bus Lines .......................................................................................................................8.2 
Interface Messages .......................................................................................................8.4 
Serial Interfaces (COM 1, COM 2)...........................................................................................8.5 
Interface characteristics.................................................................................................8.5 
Signal lines.....................................................................................................................8.6 
Transmission Parameters..............................................................................................8.6 
Interface functions .........................................................................................................8.7 
Handshake.....................................................................................................................8.8 
Connectors for Peripherals ................................................................................................... 8.10 
Printer Connector (LPT).............................................................................................. 8.10 
Monitor Connector (MONITOR).................................................................................. 8.11 
Keyboard Connector (KEYBOARD) ........................................................................... 8.11 
Signal Inputs and Outputs..................................................................................................... 8.12 
RF Connectors............................................................................................................ 8.12 
Inputs and Outputs for the Reference Frequency (REF...)......................................... 8.12 
AF Connector SPEECH (Optional)............................................................................. 8.13 
IF Signal...................................................................................................................... 8.13 
Service and Auxiliary Connectors............................................................................... 8.13 
Abis Connector (CMU300 with Option CMU-B71 only).............................................. 8.15 
I/Q CH1 Connector (CMU200 with Option CMU-B17 only)........................................ 8.16 
IF3 Connectors (CMU200 with Option CMU-B17 only).............................................. 8.17