CONTENTS
SAFETY ........................................................................... 2
Introduction ................................................................... 2
PRODUCT PRESENTATION ......................................... 3
General ......................................................................... 3
Rear View...................................................................... 3
Front View ..................................................................... 4
INSTALLATION ............................................................... 5
Unpacking ..................................................................... 5
Voltage-Range Selection .............................................. 5
Grounding ..................................................................... 5
Connecting External Reference.................................... 6
Installing Options .......................................................... 6
Calibrating the MTCXO................................................. 6
OPERATING INSTRUCTIONS........................................ 8
Using the Frequency Counter ....................................... 8
Battery Unit ................................................................ 20
Error Codes................................................................. 20
GPIB-INTERFACE OPERATION .................................. 21
Introduction ................................................................. 21
What Can I Do Using the Bus? ................................... 21
Connecting the Controller ........................................... 22
Giving the Counter an Address ................................... 22
Checking the Communication..................................... 22
Two Ways of Programming......................................... 23
Syntax ......................................................................... 23
Selecting Output Separator .........................................24
How to Select Function ...............................................24
Selecting Measuring-Time...........................................24
Selecting Triggering.....................................................25
Totalize Start/Stop .......................................................25
Free-Run/Triggered .....................................................25
Service Request ..........................................................26
Status Byte ..................................................................26
Output Mode................................................................27
Bus Learn ....................................................................30
Programming Data Out ...............................................30
What Happens When I Switch to Local?.....................30
Summary of Bus Commands ......................................31
Programming Examples..............................................32
SPECIFICATIONS .........................................................35
Measuring Functions ...................................................35
Definitions....................................................................36
Input specifications......................................................36
General Information.....................................................37
Auxiliary Functions ......................................................38
Optional Accessories...................................................38
Ordering Information ..................................................40
APPENDIX 1 ..................................................................41
Checking the Sensitivity of Counters ..........................41
INDEX ............................................................................43
4822 872 20021
5/12-April-1995
CONTENTS
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PM 6669 - OPERATORS MANUAL