User's Manual | ACOM 500S | 160-4
m Linear Power Amplifier
March 2023
S e c t i o n FIRST POWER-ON, CONTROL SYSTEM, AND INITIAL CHECK | Page 29 of 66
c)
Working mode indicator - OPR, STB or AUTO OPER
, Pos. (c).
For detailed information, please, see Section
4.1 Change of Modes RX/TX and OPERATE/STANDBY; AUTO OPERATE
d)
RX/TX indicator
, Pos. (d).
RX/TX indicator reads the request for transmit (
KEY IN
input). The RX indication is green and the TX is red.
The indicator will flash frequently if switch over is impossible.
e)
Forward power bar graph and digital readout
, Pos. (e).
Displays the forward power fed into the antenna.
f)
Reflected power bar graph and digital readout
, Pos. (f).
Displays the power reflected from the antenna. Entering the red zone is not allowed.
g)
PA transistor temperature bar graph and digital readout
, Pos. (g).
Entering the red zone is not allowed.
h)
CAT interface information
, Pos. (h).
When CAT is deactivated, this field is shaded.
i)
REMOTE CONTROL information field
, Pos. (i).
Flashing the REMOTE CONTROL represents RS-232 port dataflow.
3.5.
Control System - Buttons and Menus
3.5.1.
OPR/STB and BAND buttons
The
OPR/STB
and the
BAND
buttons are used for manual (local) control (see
):
•
The left-most button
OPR/STB
switches over the amplifier between OPERATE and
STANDBY modes;
•
The next two buttons -
BAND
up and down arrows change the frequency bands in
ascending or descending order.
When ACOM 04AT tuner is assigned,
BAND
buttons are called
SEGMENT
and change the
tuner frequency segments (see Section
4.4 Operation with an External Antenna Tuner
).