Table 14-6 Modem Rx Intermediate Frequency Input Interface; Table 14-7 Rx Intermaediate Frequency Monitor Interface - L3 Communications MPM-1000A Operator's Manual

MPM-1000A Operator Manual

Table 14-6 Modem RX Intermediate Frequency Input Interface

CONN Signal Name
J8 RX IF
14.3.2.6 RX Intermediate Frequency Monitor Interface
The Modem provides a RX Intermediate Frequency Monitor output. This output contains
the same L-Band RX signal received on the primary RX IF Interface, attenuated by 21-
dB +/- 2dB. The RX IF Monitor does not contain the 10 MHz reference signal and DC
component present in the primary RX IF Interface. This interface is located on the front
panel J12 connector.

Table 14-7 RX Intermaediate Frequency Monitor Interface

CONN Signal Name
J12 RX MON
14.3.2.7 Control, Monitor and Alarm ETHERNET Interface
The Modem provides a SNMPv3 Control, Monitor and Alarm interface to the host
computer. This interface is an 802.3 Ethernet interface compatible with 10BASE-T,
100BASE-T and 1000BASE-T. Note that the user may optionally use the Network
Centric Data Ethernet interface to support the Control Monitor and Alarm (CMA)
function.
The CMA interface supports the Secure Shell Version 2 (SSHv2) protocol for loading
Transmission Security (TRANSEC) keying parameters (Message Seed Key and
TRANSEC Passphrase).
This interface is located on the rear panel J2 connector.
The managed objects accessible via SNMPv3 are defined by a management
information base (MIB), which is text file. A snapshot of the MIB is provided in the
electronic version of this document as an attachment below (the full text of the file would
be too large to expand in this document). The MIB definition changes as features are
added. The current version includes managed objects for the Radio-to-Router Control
Protocol (R2CP), Dynamic Multicast, Modem Stacking and System Calibration features.
Input/Output
Input/Output RX IF Frequency Range: 950 MHz to 2150 MHz
(L-Band)
RX IF Output Signal Level: -77 dBm to -15 dBm
individual carries across 50Ω; maximum functional
composite RX IF input level: +11 dBm; maximum
composite RX IF input level without damage: +30
dBm.
Impedance: 50Ω nominal with a voltage standing-
wave-ration (VSWR) <1.5:1
10 MHz reference output. Signal Level: 7 dBm +/-
2 dB
+18 VDC output: 18 VDC =/-0.5V, 450 mA Max
Input/Output
Output RX IF Frequency Range: 950 MHz to 2150 MHz
(L-Band)
Output Impedance: 50Ω nominal VSWR <1.5:1
14-8
Signal Description
Signal Description
1000-7075 Rev E
Pin
COAX
Pin
COAX