Acom 1010, Руководство пользователя, Страница: 20 / 40

User's Manual | ACOM 1010 | HF Linear Amplifier
Page 20 of 40 | S e c t i o n POWER ON, CONTROLS AND INDICATORS July 2021
The OPER button alternatively switches between the OPERATE and STANDBY modes once the amplifier has
completed its 150-second warm-up period (see Section
4.2 Changing OPERATE and STANDBY Modes
).
The RTTY button reduces the output power of the amplifier to 500 W (see Section
4.3 RTTY Mode
).
The button labeled
A1-A2 (see Section
4.4 Antenna Change
) changes the antenna output to either Antenna 1
or Antenna 2 , according to the operator's choice. It is the operator's responsibility to connect suitable
antennas to the ANT1 and ANT2 connectors (see
Figure 2-1 Rear panel - Connections
, Pos. (c)).
The red TX LED illuminates whenever the
KEY-IN input is keyed (closed to ground), i.e., when the
transceiver goes into the transmit mode (see Section
2.4.d) KEY-IN socket
).
The
BAND knob controls the band switch, and LOAD and TUNE are used to adjust the respective variable
air capacitors in the amplifier's output circuit. The settings of these three controls must be changed at each
band change as well as when an antenna is changed. The three LED indicators located above the knob
LOAD are called the "TRI tuning indicator" and they are used to achieve antenna impedance matching
during a re-tune procedure (see Section
4.5 Tuning
).
NOTICE
Do not switch the BAND switch knob while transmitting with the amplifier! Hot
switching (while transmitting) will eventually destroy the band switch, not covered by
the warranty!
There are three warning yellow LED indicators and one fault red LED indicator located in the bar-graphs
area. The following describe the error conditions and the correct responses (except for the service
functions - see Section
5.6 Service Functions
):
•
G1
- when illuminated, a control-grid overload condition exists.
Reduce the drive power for safe operation;
•
G2
- when illuminated, a screen-grid overload condition exists.
Reduce the drive power and/or refresh the tuning for safe operation (see Section
4.5 Tuning
);
•
IP
- when illuminated, a plate current overload condition exists.
For safe operation reduce the drive power and/or refresh the tuning (see Section
4.5 Tuning
);
•
F
- when illuminated, the amplifier automatic protection has tripped.
If F is accompanied with one of the G1, G2, or IP condition indicators, the cause of the
protection trip will be evident. When F alone is illuminated, check the keying wiring (see
Section
2.4.d) KEY-IN socket
). See Section
4.6 The Auto-Protection System
for details about the
auto-protection system.