Mb/S Positive Pulse - HP 37717C Calibration Manual

Performance Tests
ETSI/ANSI Transmitter Output Level and Waveshape (Option 110)

34.368 Mb/s Positive Pulse

1. Recall the HP 37717C Default Settings as shown on 3-2.
2. Select the HP 37717C TRANSMIT
page, and set as follows;
3. Connect the Transmit Module (Option 110) 75 ohms Unbalanced Output to the
Oscilloscope via the 75/50 ohm converter.
4. Select CHAN on the oscilloscope and set to 50 ohms input impedance, DC
coupled.
5. Select CHANNEL 1 on the oscilloscope and select PROBE 2.45 (attenuation
level to compensate for the 75/50 ohm converter).
6. If using the HP 54503A oscilloscope, use the following key sequence to select
and store the correct Telecom Mask.
a. DEFINE MEAS key.
b. COMPARE softkey.
c. TEST ON softkey.
d. WFORM SAVE key.
e. MASK CCITT G703 34Mb softkey.
f. STORE to M1 + M2 softkey.
g. STORE softkey.
7. Press the SHIFT key on the oscilloscope (colored blue), then MASK AUTO key
then 1 key.
The oscilloscope will now automatically display and compare an isolated positive
pulse from the HP 37717C with the limits in the selected Telecom Mask. A PASS
message should appear on the oscilloscope display when completed.
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