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ARMA-C125-CRM
34
7.6
G
AIN
A
DJUSTMENT
The output attenuation of the amplifier will be set to the factory default setting of 10 dB, or the
previous setting stored in memory. (2 minutes wait period)
7.6.1
F
ROM THE
F
RONT
P
ANEL
:
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 7.4
Select Local Control Mode
at
page 32.
2.
In the main menu, use the
[
é
é
]
or
[
ê
ê
]
key to select the ADJUST ATTENUATION display.
3.
Use the
[
ç
ç
]
and
[
è
è
]
keys to select the gain attenuation level in dB. Each press of a button
either increases or decreases the attenuation by 0.1 dB increments. Holding a button will
cause the display to increment/decrement automatically at a faster rate.
4.
Press
[Enter]
to confirm your selection.
7.6.2
U
SING THE
S
ERIAL
I
NTERFACE
:
1.
Verify that the unit is in REMOTE control mode (REMOTE/LOCAL LED indicator is ON).
If not, switch to REMOTE mode as instructed in
Section 7.4
Select Local Control Mode
at
page 32.
2.
From Screen (menu) #1, use the ‘F9’ function key to select the SSPA and then ‘F8’ (‘Atten’).
At the prompt, enter the desired attenuation level (from 0 to 400 corresponding to 0 to 40 dB
of attenuation, disregarding the decimal point). For example, to request 15.3 dB attenuation,
enter 153. For an attenuation level of 4.0 dB, enter 40.
7.7
P
OWERING
U
P THE
A
MPLIFIER
To power up the amplifier (i.e. activate the RF portion of the SSPA) after an shutdown do one
of the following:
7.7.1
F
ROM THE
F
RONT
P
ANEL
:
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 7.4
Select Local Control Mode
at
page 32.
2.
In the main menu, use the
[
é
é
]
or
[
ê
ê
]
key to select the TO POWER PA display.
3.
Press
[Enter]
to confirm your selection.
STATUS: ____
ADJUST ATTENUATION
STATUS: ____
<ENTER> TO POWER PA