5-12 E1 Analyzer Verification, Option 52 Option Verification
5-60 PN: 10580-00255 Rev. J MT8212E and MT8213E MM
2. Set up the MP1570A as follows:
• Set Mapping to Tx&Rx
• Set Config. to SDH/PDH
• Set Bit Rate to 2M
• Set Frame to ON
• Set Channel to 30ch
• Set CRC4 to ON
• Set Signalling to OFF
• Set Interface to Unbalanced
• Set Clock to internal
• Set Monitor Mode to OFF
3. Press the Test Menu key and set up the MP1570A as follows:
• Set Test menu to Manual
• Set Test Pattern to PRBS15
• Set Invert mode to OFF
• Set Analyze to Freq. monitor
4. Set the Mode of the instrument to E1 Analyzer and preset the instrument.
5. Press the Configuration main menu key (below the display)
6. Confirm that Tx Clock is set to Internal.
7. Use the Down Arrow key to highlight Input Connector.
8. Press the BNC 75 Ohms soft key.
9. Press the Pattern main menu key. Use the rotary knob to highlight PRBS15 and press the
Select Pattern soft key.
10. Connect a 75 ohm BNC cable (part number 3-806-169) between the Tx port of the MT821xE and the
CMI/HDB3 Input of the MP0121A Module on the MP1570A.
11. Connect a 75 ohm BNC cable (part number 3-806-169) between the Rx port of the MT821xE and the
CMI/HDB3 Output of the MP0121A Module on the MP1570A.
12. On the MP1570A, allow the status bar on the bottom of the display to complete at least one sweep.
13. Record the ppm reading in the Internal Clock Error row of Table A-56, “Option 52, E1 Frequency
Clock” on page A-40.
14. On the MT821xE, press the Measurements main menu key and then the Rx Signal soft key.
15. Press the Start/Stop main menu key to turn measurement On, “Measure ON” appears in the lower-left
corner of the display.
16. Record the Frequency reading on the display in the Recover Clock Frequency row of Table A-56.
17. Press the Start/Stop main menu key to stop the measurement.
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