METRODATA LTD
WCM1100 / WCM3100 / WCM-Serial / LHM1000 / LVM2000 User Manual
76-02-082 Rev N
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5.3.3.5 RX Sensitivity
The WAN port supports both short and long haul modes of operation. The Rx Sensitivity
mode may be toggled between:
For E1 mode
Short Haul
max cable loss 12 dB
Long Haul
max cable loss 43 dB
For T1 Mode
DSX-1
max cable loss 12dB
CSU
max cable loss 36dB
5.3.3.6 Line Build Out (T1 Only)
The T1 standard defines the pulse mask at the far end of the cable and therefore the
transmit power needs to be adjusted for diffferent cable lengths to prevent under or over
driving the distant receiver. The line build out options are as below:
For DSX-1 mode
0-133ft
133-266ft
266-399ft
399-533ft
533-655ft
For CSU Mode
0dB
-7.5dB
-15dB
-22.5dB