Demodulator - Comtech EF Data CDM-600L Installation And Operation Manual

CDM-600L Satellite Modem
Summary of Specifications
0.00 0.10 0.20
0
-5
Comtech EF Data
CDM-600L Transmit
-10
Power Spectral Density,
referred to symbol rate
-15
-20
-25
-30
-35
-40
-45
-50
Spectral
density,
dB
-55
15.2

Demodulator

Data rate range, operating modes, de-scrambling, input impedance/return loss etc, as per
Modulator
Input power range
Receive Level
Monitor
Input Composite
Power:
Maximum
Composite
Operating Level
Absolute Maximum
No Damage
Input Connector
Input Return Loss
0.30 0.40 0.50 0.60
Intelsat
IESS 308/309
Limit
-130 + 10log(symbol rate) (desired carrier) to –130 + 10 log(symbol rate) + 50 dBm
± 5 dB accuracy vs. frequency, temperature, and level
+30 dBc within 10 MHz of desired. Each adjacent carrier is like modulated and ≤ 7 dBc
relative to neighboring carrier.
+40 dBc with respect to receive signal. Total carrier power within the symbol rate BW at 1/2
the desired carrier frequency ≤10 dBc relative to the desired carrier power.
-5 dBm maximum
+20 dBm
Type F Female @ 75Ω, Type N Female @ 50 Ω
≥ 10 dB
0.70 0.80 0.90 1.00
CDM-600L Modulator
typically < -50 dB, and
guaranteed to be
< -45 dB at offsets
> 0.75 Rs
15–4
MN/CDM600L.IOM
1.10 1.20 1.30 1.40
s
Symbol Rate, R
Intelsat
IESS 308/309
Limit
Revision 2
1.50