Ericsson KH-500, Operator'S Manual, Page: 22 / 64

22
Power-up Self-test
Each time the radio is turned on, it will perform
power-up self-test. All display segments will turn on,
and after successful completion of the test, the radio
will change to the last operating state (channel, etc.)
and sound three (3) or four (4) beeps. Three (3) beeps
sound if the radio is operating in the normal (not scan)
state. Four (4) beeps will sound if the radio is
scanning. The status will be indicated in the LCD. If the
radio fails the self-test, no beeps will be sounded.
Carrier Control Timer
This feature, programmable on a per-radio basis,
prevents unnecessary channel traffic and radio
damage if the transmit timer limit is exceeded. If the
programmed timer times-out during a transmission, the
radio will beep and stop transmitting. The beeping tone
will continue until the operator releases the PTT
button. Releasing the PTT button resets the timer.