Manual Gain Operation; Figure 4-6. Agc Operating Region - Comtech EF Data KST-2000L Installation And Operation Manual

Satellite Terminal System
Operation
Allowed Up Converter
Attenuation, dB (UCA)
4.5.3

Manual Gain Operation

With AGC disabled, the closed loop control of the uplink path is disabled. The SSPA
saturation, INSUFFICIENT INPUT POWER, EXCESSIVE INPUT POWER, and LOOP
faults are not monitored or reported as faults. The status of the AGS_fault is displayed as
OK. In this mode, the system gain is not accurately defined as in the AGC mode, because
the accuracy of the up converter's programmable attenuator and the static gains of the up-
link amplifiers determine the gain.
When this mode is selected, UCA will display as an integer (with no decimal point), and
the allowed range of the UCA is 0 to 55 dB in 1 dB steps. The accuracy of the attenuator
is not guaranteed and degrades at high values.
SSPA Power Saturation
Boundary
-50 -45

Figure 4-6. AGC Operating Region

-35
-40
Allowed IF Input Power Range,
dBm
4–10
Revision 2
MN/KST2000L.IOM
-20
-25
-30