Snr, Snr; Srev; Stat; S/N Ratio Screen - GE MDS 4790M Installation And Operation Manual

MDS 05-3628A01, Rev. B
Command Input
SHOW DC
SHOW PWR
SHOW CURRENT
SHOW RADIO

SNR, SNR!

These commands display the signal-to-noise ratio in dB. GE MDS' definition
of signal-to-noise is based upon the signal level following equalization, for
valid frames only. A valid frame is defined as containing no more than one bit
error, and belonging to a packet addressed for the receiving radio. SNR is
updated and latched for each valid packet received. A filter in the DSP tempers
the effect of any sudden changes in the value.
Output ranges from 10 dB to 33 dB. A value of 10 dB represents little or no
signal. A value of 24 dB represents a very strong signal.
The command causes the diagnostic port to enter an SNR update mode.
SNR
The diagnostic port will display an updated SNR output line at roughly a 2
second interval refresh rate. The diagnostic port will stay in this mode until the
Enter key is pressed at the PC.
The command is a "computer friendly" version of
SNR!
one-time reading and display of SNR at the diagnostic port.

SREV

displays the software release number, revision and build date:
SREV

STAT

The command provides a user-friendly, interactive way to get alarm
STAT
status. (The command (page 28) summarizes alarm codes in
ALARM
hexadecimal format.)
If no alarm event conditions are active, the message
displayed. If alarms are present, they are displayed in ascending order starting
with the lowest event number:
Event: 26 (MINOR)
DC input power is not in
valid range
MDS 4790M (MPT 1411) I/O Guide
Response
DC IN xx.x V
DC OUT x.x V
RF POWER xx dBm
LNA xxx mA
TOTAL xxx mA
B RADIO IS ACTIVE
A RADIO IS [INACTIVE|NOT EQUIPPED]
S/N Ratio screen, page 61
Software Revision screen,
page 62
06-3321A01
1.0.0 ddmmmyyyy
Active Radio Status screen,
page 61
. It provides a
SNR
is
NO ALARMS PRESENT
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