At The Front Panel; Gain Adjustment; Using The Serial Interface; Powering U P The Amplifier - Advantech ARMA-C250-CRM Installation And Operating Manual

Redundant 250 w c-band rack-mount solid state power amplifier
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disregarding the decimal point. For example, to request a minimum output power of 30.0
dBm attenuation, enter 300.
5.6 G
A
AIN
DJUSTMENT
The output attenuation of the amplifier will be set to the factory default setting of 10dB or the
previous setting stored in memory.
5.6.1 A
F
T THE
RONT
1. Verify that the unit is in LOCAL control mode (REMOTE/LOCAL LED indicator is OFF), if
not, switch to LOCAL mode as instructed in Section 5.4 Select Local Control Mode at page
37.
2. In the main menu, use the [ ] and [ ] keys to select the ADJUST ATTENUATION display.
3. Use the [
] and [
either increases or decreases the attenuation by 0.1 dB increments. Holding a button will
cause the display to increment or decrement automatically at a faster rate.
4. Press [Enter] to confirm your selection.
5.6.2 U
S
SING THE
ERIAL
1. Verify that the unit is in REMOTE control mode (REMOTE/LOCAL LED indicator is ON).
If not, switch to REMOTE mode as instructed Section 5.4 Select Local Control Mode at page
37.
2. From Screen (menu) 1, use the 'F9' function key to select the SSPA and then 'F8' ('Atten').
At the prompt, enter attenuation level (from 0 to 20.0 dB), disregarding the decimal point.
For example, to request 15.5 dB attenuation, enter 155. For an attenuation level of 4.0 dB,
enter 40.
5.7 P
U
OWERING
P THE
To power up the amplifier (i.e. activate the RF portion of the SSPA) after the shutdown, do one
of the following:
5.7.1 A
F
T THE
RONT
1. Verify that the unit is in LOCAL control mode (REMOTE/LOCAL LED indicator is OFF), if
not, switch to LOCAL mode as instructed in Section 5.4 Select Local Control Mode at page
37.
2. In the main menu, use the [ ] and [ ] keys to select the TO POWER PA display.
3. Press [Enter] to confirm your selection.
P
:
ANEL
STATUS: ____
ADJUST ATTENUATION
] keys to select the gain attenuation level in dB. Each press of a button
I
:
NTERFACE
A
MPLIFIER
P
:
ANEL
STATUS: ____
<ENTER> TO POWER PA
ARMA-C250-CRM
39

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