5-11 T1 Analyzer Verification, Option 51 Option Verification
5-56 PN: 10580-00255 Rev. J MT8212E and MT8213E MM
T1 Clock Frequency Test Verification
This test will verify that the internal signal is being clocked at the correct frequency and also verify that the
clock recovery circuit can generate the correct frequency.
Procedure
1. Connect the External 10 MHz Reference Signal to the rear panel of the MP1570A.
2. On the MT821xE, press Shift, Mode (9), and use the Up/Down keys to select T1 Analyzer.
3. Press Shift, Preset (1). Press the Preset soft key to preset the instrument.
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 1.5 M
• MUX/DEMUX: set to OFF (not present on all units).
• Frame set to ON
• 1.5 M 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).
Note
Basic Instructions for Operation of MP1570A:
The Test Menu, Result, and Analyze keys all should be pressed so that their LEDs are On.
The green Start/Stop key should also be pressed so that its LED is On.
The Setup key toggles between two displays. You will need to change Parameters under both these
displays.
If the required parameter is not visible under the present display, then press the Setup key to change
the display (the required parameter will appear).
Changing the Setup Parameters:
Use the arrow keys to highlight different parameters that will need to be changed. Use the
Set key to
display the menu of choices for each parameter.
Use the Up/Down arrow keys to highlight the desired setting, then press the Set key to accept the
highlighted setting.
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