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3/a FRONT PANEL
1. POWER ON
Main switch of the equipment.
2. ON LED
The LED indicator glows when the Linear is switched on. Doesn't lit in case the 15V DC – supply
for the protection circuits and antenna switch - is missing
3. OVR LED
The blinking LED indicates the active stage of the protection circuit. The protection might be
active due to overdrive, IG1 higher as specified,
specifications)
If the protection is active, the TCVR power by-pass the PA. To reset the protection release the
STBY SWITCH, than push it again. The reason of the trouble has to be cleared first.
4. AIR LED
The indicator glows while transmitting and the T/R relay is switched on. Without driving power
the PLATE meter indicates the idle current of the PA
5. OPR LED
Glows when the PA is ready for transmission. During heating up period, when the LED doesn't
lit, the driving is blocked. The stby time is about 180 sec.
6. WAIT LED
Blinking during the heating up period, indicating that the heating is in progress. Required time
is abt. 180 sec, when the light goes out and the OPR led lit up.
7. QRO LED
Indicates the high power mode of the PA. Can be activated by the push-button below. In case
the mode is not active, only the TCVR power is on the aerial. (Small PWR STBY mode)
8. STBY SWITCH
The PA can be driven only if switch is ON, otherwise the TCVR power by-passes the PA (STBY).
In case the overload protection is active, switch to STBY, and switch ON again.
9. RF FORWARD POWER BARGRAPH
Indicate RF output power in KW.
10. REFLECTED POWER BARGRAPH
Indicate the reflected power in Watts.
11. Ig1/TEMP BARGRAPH
Indicate grid 1 current, when you push the TMP pushbutton indicate outlet air temperature in
Celsius.
6
.
SWR > 3, or any other case. (See
.
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