HP 37718A Installation And Verification Manual page 84
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 OTE
Performance Tests
PDH/DSn Transmitter Output
c/ Use ENTRY/MEASURE control to select 139BIN0 in the
highlighted MSK FILES window.
d/
LOAD SETUP 8 M1M2
Compare Pulse with Mask
11 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
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 450 mV and 550 mV. (i.e.
900 mV-1.1V Pk-Pk)
14 Select PATTERN to [ALL 0's] on the
15 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
16 Repeat steps 5 to 13 to check pulses against Inverted masks.
3-16
softkey.
softkey
TRANSMIT
softkey
display.
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