Controls
1. Power Switch - This slide switch turns the counter on and initiates a
2 second test of all the LCD segments.
2. Hold Button - This holds the current display and stops the counter from
counting.
Calibration - The calibration adjustment opening is located on the front panel
of the counter. This allows access to the trimmer capacitor that provides about
a 10 PPM adjustment range of the time base oscillator.This is not usually
necessary but to do so read a signal of an known frequency before adjusting the
trimmer for correct frequency display. If you calibrate at 4.1943 MHz or above
then the counter will be more accurate.
Warranty
Welfare Electronic Component Ltd. guarantees the counter and accessories for
one year against defects in manufacture. This warranty does not cover items that
have been modified, subject to unauthorized repairs, misuse or abuse. This
warranty does not cover damage caused by excessive power levels applied to the
signal input. Never make any kind of connection between the counter and a
transmitter.
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