External:
Clock Port:
Unbalanced RX2 selected as default.
Clock External
Aux Line Code:
HDB3, B8ZS, or AMI
Rx:
The clock for the transmitter is derived from the received signal and the jitter of the incoming signal is suppressed.
Offset:
Clock Offset:
With the Clock Offset box checked, a custom deviation value of +/- 50ppm can be entered
Termination
(Rx only)
:
The sensitivity of the receiver can be set for ITU-T/ANSI, Protected Monitoring Points (PMP) or High
Impedance connections. The options under the Termination menu are
Terminated:
The received signal is terminated with a 100ohm impedance enabling the unit to decode the signal over a
wide range of cable losses.
Monitor:
To be used when the measurement is made at a Protected Monitoring Point (PMP) of network equipment. The
PMP level can range between -20 and -26dB. The is fully compliant with ITU-T G.772 and relevant sections
defining PMP.
Bridge:
Select this mode for a high impedance monitor test or when the receiver is connected directly in parallel to a DS1
line carrying live traffic. The isolation circuit of the unit protects the DS1 signal from any possible disruption.
Balanced
(Tx only)
:
Check when using the RJ-45 connectors. The transmitter output impedance will be set to 120 ohms. The
Primary test port is "1" on top panel. If unchecked, the unit will assume that testing is taking place on the 75ohm unbalanced
BNC TX connector for E1 mode.
18.1.3 Payload
Tap the payload box to access this feature. Payload allows the user to configure a low rate signal (if applicable) and associated
framing.
Payload - 2M
Rate
:
In 2M mode, the options are 2M or Fractional E1 (N x64) where:
2M: Configures the transmitter for full rate testing at 2,048Mbit/s
Fractional E1 (N x64): Configures the transmitter for fractional testing using N or M 64kbit/s timeslots. (Contiguous or
noncontiguous timeslots)
In E3 (34Mbit/s) mode, the options are 34M or 2M Mux (E3/E1 Mux) or Fractional E1 (Nx64) Mux where:
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Summary of Contents for VePal TX130M+
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