TeeJet LH 965 - Manual (Page 15)

LH 965 O PERATORS MANUAL
LH A GRO 15
TEST
When this function set has been selected the following pictures will appear.
You can change between the display pictures with the function key NEXT PAGE.
The TEST-function is used to test the mounted sensors. For each sensor a
counter shows how many times the sensor has been activated. This counter is to
the left on the display under each sensor.
All counters are cleared simultaneously by the DELETE key.
The counters can count up to 255 pulses. After this they will restart from 0.
To the right you can see if the sensor is active (LO) or not (HI).