Manual

FUNCTIONS OF CONTROLS, INDICATORS, AND CONNECTORS
(cont.)
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 (10 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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