Receive carrier reacquisition, Agc output, Demodulator input return loss – Comtech EF Data SNM-1010L User Manual
Page 258: Lnb prime power, Lnb band control, Lnb reference signal
SNM-1010L Data/Control Modem
Revision 0
Specifications
MN/SNM1010L.OM
B.4.3
Receive Carrier Reacquisition
The modem is programmed to delay the acquisition process upon loss of lock. This will
minimize the acquisition time for a brief loss of the carrier. This delay is programmed
from 0 to 999 seconds in 1-second steps.
B.4.4 AGC
Output
A programmable DC output, proportional to the receive signal level, is available at the
rear panel at 10 mA maximum, 0 to 10V. Default levels are 0V for minimum signal
level and 10V for maximum signal level. The low level (0V) can be programmed from 0
to 10V in 0.5V increments. The high level can be programmed from 0 to 10V in 0.5V
increments.
B.4.5
Demodulator Input Return Loss
The Demodulator output return loss shall be > 10 dB into a 75
Ω load.
B.4.6
LNB Prime Power
The DC input on the center conductor of the L-band connector is selectable
for OFF, 13V, 18V, 24V.
B.4.7
LNB Band Control
The IDU shall provide a 22 kHz tone outbound of L-band input connector per DiSEq
4.2.
B.4.8
LNB Reference Signal
The modem provides an Internal and External reference of 10MHz, which will be
On/Off selectable.
B–16