Select: Monitor: Gigabit I/F Statistics; Select: Test - Comtech EF Data SLM-5650 Installation And Operation Manual

SLM-5650 Satellite Modem
Front Panel Operation
4.3.2.5

Select: Monitor: GigaBit I/F Statistics

GigaBit Ethernet Card Statistics:
View
Clear-All
IMPORTANT
4.3.3

Select: Test

TEST: Carrier
Carrier
Loopback
BERT
View Clear-All
Permits the user to view the link statiscal counters.
Permits the user to clear or reset the FPGA link error counter.
This menu will not appear unless a GigaBit Ethernet Interface is
plugged into the modem.
Loopback
Permits the user to select carrier test modes, which include, Normal, Tx-CW or
Tx-1,0. Normal means, standard modem operation, not a test mode. Tx-CW
means a pure carrier, which can be used for frequency and power
measurements. Tx-1,0 means that the modulator will produce an offset test
carrier (single upper side band suppressed carrier), This test mode allows the
user to check for quadrature error in the modulator.
Permits the user to select Normal, IF, I/01, I/02 modes. Normal means,
standard modem operation, not a test mode. IF mode means, that the output of
the modulator is looped back to the demodulator (inside the modem) to verify
transmit and receive configurations match as well as the data inputs and
outputs. I/O1 means, baseband loopback which will loop the transmit data
(after the interface) back to the receive data path interface. This mode is useful
for checking interface cabling and clocking. I/O2 is currently the same as I/O1.
Permits the user to select Tx, Pattern, Errins, Reset, Rx. Errs or BER. Tx
on/off allows the user to either ignore the Tx data interface or use an internally
generated PN pattern, or to function normally. Pattern allows the user to select
test data patterns. Error insert allows the user to insert errors in the data
stream to verify that the circuit is indeed connected and operational. Reset
allows the user to clear the BER and Error displays while restarting the test. Rx
on/off allows the user to turn the bit error tester on. This will count any errors in
the receive data stream and compare it to a time base. Errors are the absolute
count of errors, which is very useful when the error insert mode is on. BER is
the measured bit error rate.
BERT
( E)
4–26
Revision 2
MN/SLM5650.IOM