HP 37718A Installation And Verification Manual page 117
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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Performance Tests
PDH/DSn Frequency Measurement and Looped Clock
7 Press
and set up the
RESULTS
display as shown opposite.
8 Verify that the FREQUENCY
displayed is between 2047991 Hz
and 2048009 Hz.
9 Verify that the Offset displayed is
between +4.5 ppm and -4.5 ppm.
10 Set the synthesizer frequency to
1024.102 kHz and verify that the
frequency displayed on the
display is between 2048.194 kHz and 2048.214 kHz.
RESULTS
11 Verify that the Offset displayed is between 95.5 ppm and 104.5 ppm.
The frequency counter should read 1.00.
12 Set the synthesizer frequency to 1023.898 kHz and verify that the
frequency displayed on the
and 2047.806 kHz.
13 Verify that the Offset displayed is between -95.5 ppm and -104.5 ppm.
The frequency counter should read 1.00.
14 Set the synthesizer level to +10 dBm, synthesizer frequency and the
HP37718A/19A to the settings given in Table 3-1 and verify the
displayed Offset at each point.
Table 3-1
Receive
Frequency
8 Mb/s (E2)
8 Mb/s (E2)
8 Mb/s (E2)
34 Mb/s (E3)
34 Mb/s (E3)
34 Mb/s (E3)
140 Mb/s (E4)
140 Mb/s (E4)
display is between 2047.786 kHz
RESULTS
PDH/DSn Offsets
Synthesizer
Displayed
Frequency
Offset
4224,000 Hz
-4.5 to +4.5 ppm
4223,578 Hz
-95.5 to -104.5 ppm
4224,422 Hz
+95.5 to +104.5 ppm
17,184,000 Hz
-4.5 to +4.5 ppm
17,182,282 Hz
-95.5 to -104.5 ppm
17,185,718 Hz
+95.5 to +104.5 ppm
69,632,000 Hz
-4.5 to +4.5 ppm
69,625,036 Hz
-95.5 to -104.5 ppm
3-49
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