User guide

T1-A and T1-B Tests
214 AXS-200/805/855
Setup Configuration
CSU/NIU Emulation: Select this mode to configure the DS1 test system
to respond to CSU, NIU-4, and NIU-5 (SMART JACK) loopbacks. In a
loopback mode the AXS-805/855 recovers the RCV data and loops it to
the TX. You must first configure the T1-A/T1-B test in any Term mode
and then select CSU/NIU Emulate. The clocking should be
Network/looped-timed (NW) for this mode.
Frac-T1: Select this mode to test contiguous and non-contiguous DS0’s.
Select the desired channel or all desired channel numbers.
Term-7.5: Select this mode to change the transmit level of the
AXS-805/855 to 7.5 dB +/- 2 dB.
Term-15: Select this mode to change the transmit level of the
AXS-805/855 to 15 dB +/- 2 dB.
Term-22.5: Select this mode to change the transmit level of the
AXS-805/855 to 22.5 dB +/- 2 dB.
³ Clocking: Select the clock source. Choices are Network/looped-timed
(NW) and Internal Clock (INT). The default setting is
Network/looped-timed (NW). Clocking is disabled if Mode is set as
Monitor, or Bridged.
³ Framing: Select the framing. Choices are ESF, D4, SLC96, Unframed,
and Auto. The default setting is ESF (Extended Superframe). When
Auto is set, it detects the incoming framing signal.
³ Coding: Select the coding. Choices are B8ZS and AMI. The default
setting is B8ZS.