Option Verification 5-13 T1/T3 Analyzer Verification, Option 53
MT8212E and MT8213E MM PN: 10580-00255 Rev. J 5-65
4. Set up the MP1570A as follows:
• Mapping set to Tx&Rx
• Configuration set to SDH/PDH
• Meas. Mode set to Out_of_service
• Bit Rate set to 1.5M
• MUX/DEMUX: set to OFF (not present on all units).
• Frame set to ON
• 1.5M Code set to B8ZS
• Framed set to ESF
• DSX set to 0 ft.
• Clock set to internal
• Monitor Mode is set to OFF
5. Change to the other Setup display (press the Setup key again) and set as follows:
• Test Pattern set to PRBS15
• Invert mode set to OFF
• Analyze set to Freq. monitor.
6. Using an 806-16 bantam cable, connect the MT821xE TX connector to the MP1570A AMI/B8ZS Input
(on the MP0122A module).
7. Using another 806-16 bantam cable, connect the MT821xE RX connector to the MP1570A AMI/B8ZS
Output (on the MP0122A module).
8. On the MT821xE, press the Configuration main menu key near the bottom-left corner of the display and
verify that Tx Clock is set to Internal, Line Code is set to B8ZS, and Framing is set to ESF. Then set
Tx LBO to 0dB and Pattern/Loop to PRBS-15.
9. The MT821xE T1 frequency and ppm error will appear on the MP1570A. Record the ppm error in the
Internal Clock Error row of Table A-59, “Option 53, T1/T3 Frequency Clock” on page A-41.
10. On the MP1570A, change Pattern to All One.
11. On the MT821xE, press the Configuration main menu key.
12. Use the rotary knob to select Tx Clock and set Tx Clock to Recovered.
13. Press the Measurements main menu key and press Rx Signal.
14. Press the Start/Stop main menu key so that Measure On is displayed in the lower-left corner of the
monitor screen.
15. Record the Frequency value on the MT821xE in the Recovered Clock Frequency row of Table A-59.
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