DMDVB20 LBST Satellite Modem
User Interfaces
TM138 – Rev. 1.0
4-27
4.3.8 Test Menu Options and Parameters
TX TEST PATTERN
{NONE, 2047, 2^15-1, 2^23-1}
Allows the user to enable the tests listed above.
RX TEST PATTERN
{NONE, 2047, 2^15-1, 2^23-1}
Allows the user to enable the tests listed above.
PATTERN SYNC
{YES, NO}
Yes indicates that the RX Test Pattern is in sync.
TST PAT ERR CNT
{NO SYNC, nnnn x 10
n
}
Displays the number of errors detected by the test
pattern checker.
TST PATT BER
{NO SYNC, nnnn x 10
-n
}
Displays the measured BER for the test pattern.
RESTART TST PAT ((ENTER))
Allows the user to restart the test by pressing <ENTER>
on the keypad.
LOOPBACK WITH ETHERNET DATA INTERFACE
Usage of the modems loopback capabilities in conjunction with the Ethernet data
interface can produce undesirable network loops. In order to run any type of data test
with an Ethernet interface you must utilize two modems connected back to back. Simply
using one modem and a loopback will not produce the desired results.
LOOPBACK
{NONE, TERR TX, BASEBAND TX, IFEC TX}
Terrestrial Loopback is performed at the Terrestrial
Interface
NONE
:
No loopback performed.
TERR TX:
Sends Tx Terrestrial Data to Rx data out.
BASEBAND TX:
Sends Tx data to the receive input to
the BB Card.
CARRIER TYPE
{NORMAL, CW, DUAL, OFFSET, POS FIR, NEG FIR}
Allows the user to set the type of carrier.
NORMAL:
Causes the Modulator to output normal
modulation.
CW:
Causes the Modulator to output a pure carrier.
DUAL:
Causes a double sideband output.
Summary of Contents for DMDVB20 LBST
Page 11: ...Table of Contents DMDVB20 LBST Satellite Modem xii TM138 Rev 1 0...
Page 14: ...DMDVB20 LBST Satellite Modem Introduction TM138 Rev 1 0 1 3...
Page 20: ...Installation DMDVB20 LBST Satellite Modem 2 6 TM138 Rev 1 0...
Page 36: ...Theory of Operation DMDVB20 LBST Satellite Modem 3 16 TM138 Rev 1 0...
Page 67: ...DMDVB20 LBST Satellite Modem User Interfaces TM138 Rev 1 0 4 31...
Page 73: ...Rear Panel Interfaces DMDVB20 LBST Satellite Modem 5 6 TM138 Rev 1 0...
Page 79: ...Maintenance and Troubleshooting DMDVB20 LBST Satellite Modem 6 6 TM138 Rev 1 0...
Page 88: ...DMDVB20 LBST Satellite Modem Technical Specifications TM138 Rev 1 0 7 9...
Page 90: ...Appendix A DMDVB20 LBST Satellite Modem A 2 TM138 Rev 1 0...
Page 97: ...DMDVB20 LBST Satellite Modem Appendix B TM138 Rev 1 0 B 7...
Page 100: ...DMDVB20 LBST Satellite Modem Appendix C TM138 Rev 1 0 C 3...
Page 107: ...DMDVB20 LBST Satellite Modem Appendix D TM138 Rev 1 0 D 7...
