HP 37718A Installation And Verification Manual page 95
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.
9 Measure the peak pulse amplitude at the mid pulse-width using the
oscilloscope and verify that this is between 1.896V and 2.844V.
Negative Pulse
10 On the Oscilloscope, use the following key sequence to access the
inverted mask.
a/ SHIFT (Blue Key) DISK
b/
softkey
DIRECTORY
c/ Use ENTRY/MEASURE control to highlight INV_MASK
d/
CHANGE DIRECTORY
Load the Telecom Mask
11 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 DS1_NEW in the
highlighted MSK FILES window.
d/
LOAD SETUP 8 M1M2
Compare Pulse with Mask
12 On the oscilloscope, use the following key sequence to compare the
pulse with the mask:
a/ RECALL 8, (Ensure CH1 Impedance is reset to 1M
TRIGGER,
to
).
Trig'd
b/ DEFINE MEAS
c/
softkey
COMPARE
d/
softkey
TEST ON
e/
softkey
M1M2
f/
AFTER FAIL CONTINUE
g/ RUN
softkey
softkey.
softkey.
SETUP and set
PATTERN TRIGGER
softkey
Ω
. Select
softkey
3-27
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