Procedure - 8.448 Mb/S - HP 37718A Installation And Verification Manual
Communications performance analyzer
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Also See for 37718A:
- User manual (190 pages) ,
- Installation and verification manual (202 pages)
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N OT E
Performance Tests
PDH/DSn Transmitter Output
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 900 mV and 1.100 Volts.
Procedure - 8.448 Mb/s
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 8MG703 in the highlighted
MSK FILES window.
d/
LOAD SETUP 8 M1M2
Compare Pulse with Mask
6 On the oscilloscope, use the following key sequence to compare the
pulse with the mask:
a/ RECALL 8
b/ DEFINE MEAS
c/
softkey
COMPARE
d/
softkey
TEST ON
e/
softkey
M1M2
f/
AFTER FAIL CONTINUE
g/ RUN
display as
softkey.
softkey.
softkey
3-19
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