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Chapter 4. Status Menu
4-6
TSU 120 User Manual 61202129L1-1
DBU Contrl (TSU 120e only)
DBU Status (TSU 120e only)
0.2 DSX-1 Menu Items
DSX-1 Errors
RTS
Request to send to DCE
CTS
Clear to send from the DCE
DTR
Data terminal ready to the DCE
DSR
Data set ready from the DCE
DBU
SECS
Total seconds in current DBU session
IN
DBU
YES/NO indication of active DBU status
CRC
An asterisk displays under the CRC if there are
CRC errors in extended superframe format
(ESF) mode. If the DSX-1 plug-on board is
configured for D4 Frame format, the LCD
displays n/a.
BPV
An asterisk displays under the BPV if the DSX-1
plug-on board detects bipolar violations.
SLIP
An asterisk displays under the SLIP if the DSX-1
plug-on board detects frame slips. This is
caused by multiple clock sources in the
application.
FER
An asterisk displays under the FER if the
DSX-1 plug-on board detects frame bit
synchronization errors.