E1 (2.048Mb/S) Frequency Accuracy; Ds1 Frequency Accuracy; Ds3 Frequency Accuracy - HP 37717C Calibration Manual
Communications performance analyzer
Hide thumbs
Also See for 37717C:
- Configuration manual (12 pages) ,
- User manual (200 pages) ,
- Operating manual (80 pages)
Table of Contents
Advertisement
Performance Tests
ETSI/ANSI Internal Transmitter Clock Rates (Option 110)
E1 (2.048Mb/s) Frequency Accuracy
1. Set the transmitter to Signal [E1 2Mb/s].
2. Adjust the Frequency Counter ATTEN and Trigger Level to obtain a stable
reading and ensure that the frequency counter reading is between 2047990.8 Hz and
2048009.2Hz.
3. Set the FREQUENCY OFFSET to [USER OFFSET] [+50PPM].
4. Adjust the Frequency Counter ATTEN and Trigger Level to obtain a stable
reading and ensure that the frequency counter reading is between 2048093.2 Hz and
2048111.6 Hz.
5. Set the FREQUENCY OFFSET to [USER OFFSET] [-50PPM].
6. Adjust the Frequency Counter ATTEN and Trigger Level to obtain a stable
reading and ensure that the frequency counter reading is between 2047888.4 Hz and
2047906.8 Hz.
DS1 Frequency Accuracy
1. Set the transmitter to Signal [DS1 1.5Mb/s].
2. Adjust the Frequency Counter ATTEN and Trigger Level to obtain a stable
reading and ensure that the frequency counter reading is between 1543992.7 Hz and
1544007.3 Hz.
3. Set the FREQUENCY OFFSET to [+32PPM].
4. Adjust the Frequency Counter ATTEN and Trigger Level to obtain a stable
reading and ensure that the frequency counter reading is between 1544042.2 Hz and
1544056.7 Hz.
5. Set the FREQUENCY OFFSET to [-32PPM].
6. Adjust the Frequency Counter ATTEN and Trigger Level to obtain a stable
reading and ensure that the frequency counter reading is between 1543943.3 Hz and
1543957.8 Hz.
DS3 Frequency Accuracy
1. Set the transmitter to Signal [DS3].
2. Connect the Clock Output port on the HP 37717C Option 110 Transmit Module
to the Frequency Counter Channel A. Terminate in 75 ohm.
3-219
Advertisement
Table of Contents
