User Manual
FUNCTIONS OF KEYS, CONTROLS, INDICATIONS, AND CONNECTORS 
(cont.) 
 REAR PANEL 
9 pin D-sub connector 
Connects to external actuation device, and enable power and frequency 
monitoring. 
Footswitch jack  Connects to the footswitch cable. 
Coax connector  Connects to the converter. 
Power module  Connects to the electrical line cord and encases the fuse(s). 
9-PIN D-SUB CONNECTOR 
Pin No.  Description 
1 Not connected 
2 Not connected 
3 Not connected 
4  Enables connection to a frequency counter. 
5  Enables connection to an external power monitor (5 mv = 1 watt) 
6 Ground 
7  Energizes the ultrasonics when connected to ground. 
8 and 9 
Enables the intensity to be remotely adjusted using an external 10k 
potentiometer. See below 
NOTE 
To vary the intensity remotely using a variable DC power supply (0-5V) instead of a 10 K 
potentiometer, connect positive to pin 8 and negative to pin 6. 
8 
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