4.2 Front Panel Controls - Electronic Control Section 

 Refer to Fig. 4.1 



1. Power on/off Switch - this should be off during 



charging and when connect- 

 ing or disconnecting 

 sensor head. 



2. AC Power Connector - centre pin grounded to case. 



3. Sensor Head Connector - used to connect the Sensor 



Head to the Electronic 

 Control Section. 



4. Chart Recorder Connector - used to connect the Chart 



Recorder to the Control 

 Section. 



5. Battery Check Push Button- indicates battery voltage 



on LMA meter when depressed. 



6. LMA Meter - indicates LMA on record or 



playback 

 Note- this should be used as an 

 indicator only; accurate 

 readings should be taken 

 from the chart recorder. 



7. Metric /English Switch - In the 'Metric' Position: 



-measured length is in 



meters 

 -rope speed is in meters 



per second 

 -meter marks are generated 



on the chart recording. 



In the 'English' Position: 

 -measured length is in yards 

 -rope speed is in feet per 



minute 

 -Yard marks are generated 



on the chart recording. 



8. Rope Direction Switch - changes direction of count- 



ing on measured length 

 counter . 



A-16 



