beautypg.com

Receive input power (composite), Demodulator input shape – Comtech EF Data SNM-1001L User Manual

Page 255

background image

SNM-1001L Satellite Modem

Revision 1

Specifications

MN/SNM1001L.IOM

A–17

A.7.14

Receive Input Power (Composite)

The modem can operate to its specified performance under all the following conditions:

• The sum of all carriers is ≤ -5 dBm.
• The sum of all carriers within 10 MHz from the desired is ≤ +30 dBc.
• The sum of all carriers is ≤ +40 dBc with respect to the desired carrier for symbol

rates

≤ 64 Ks/s.

• The sum of all carriers is ≤ +50 dBc with respect to the desired carrier for symbol

rates

≥ 64 Ks/s.

A.7.15

Demodulator Input Shape

The modem can be set to match any of the following spectral mask specifications.

• Closed net (Comtech EF Data)
• Closed net (Comstream)
• Closed net (Fairchild compatible)