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Selecting Test Features

Dropping an External Payload/Test Signal

Dropping an External Payload/Test

Signal

Description You can Drop a PDH signal from the received payload or drop 2 Mb/s or

DS1 (Option 110) from the structured PDH signal to external equipment

for testing purposes.

You can only Drop an external payload if Option UKJ, Structured PDH,

or Option 110 DSn SPDH is ﬁtted.

140 Mb/s and 34 Mb/s (for Option UKJ) and DS3 or 34 Mb/s (for Option

110) can only be dropped if SDH/SONET is chosen as the receive

interface and the payload is not structured.

2 Mb/s or DS1 can be dropped from a structured or non-structured SDH/

SONET payload and from a structured PDH signal.

HOW TO: Drop 34 Mb/s, DS3 & 140 Mb/s

1 Connect the 75Ω OUT port of the Tx PDH module to the external

equipment.

2 Set up the receive SONET interface, and choose DROP 34 Mb/s, DS3

or 140 Mb/s as required on the display. If

you select DROP DS3, also select the output level from DS3-HI, DSX-

3 or DS3-900’.

SONET MAIN SETTINGS

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HP 37717C User Manual

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