Procedure - Dsx-3 - HP 37718A Installation And Verification Manual

N OT E
Performance Tests
PDH/DSn Transmitter Output
f/
AFTER FAIL CONTINUE
g/ RUN
12 The oscilloscope will automatically display and compare an isolated
positive pulse with the mask limits. A PASS message should appear on
the Oscilloscope.
It may be necessary to visibly fit the waveform to the mask by adjusting
the oscilloscope vertical position and horizontal delay to obtain a PASS on
the Mask.
13 Measure the peak pulse amplitude at the mid pulse-width using the
oscilloscope and verify that this is between 2.133V and 2.607 Volts.

Procedure - DSX-3

Positive Pulse
1 Recall the HP37718A/19A Default Settings as shown on page 3-2.
2 Set the
TRANSMIT
shown opposite.
3 Connect the PDH/DSn 75Ω OUT
port to the Oscilloscope CHAN 1,
terminate in 75Ω.
4 Select CHAN 1 on the oscilloscope
and set to 1MΩ input impedance.
Load the Telecom Mask
5 On the oscilloscope, use the following key sequence to select and load
the required Telecom Mask:
a/ SHIFT (Blue Key) APPLICATION.
b/
TELECOM MASK/MASK
c/ Use ENTRY/MEASURE control to select DS3_92 in the highlighted
MSK FILES window.
d/
LOAD SETUP 8 M1M2
softkey
display as
softkey.
softkey.
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