To Next Page

To Previous Page

3-126

Performance Tests

Transmitted Jitter Amplitude Accuracy (Option UHK)

Description

The HP 37717C Transmitter Unbalanced PDH Output is connected to the Spectrum

Analyzer. The HP 37717C Jitter modulation frequency is set to the speciﬁed

maximum for 10UI at the selected Bit Rate and the Spectrum Analyzer set to

optimize the displayed spectrum centered at this bit rate. The HP 37717C jitter

Modulation amplitude is set to the level at which a Bessel Null is expected, then

ﬁne-tuned to maximize the null. The jitter Amplitude (UI pk-pk) displayed on the

HP 37717C is checked to ensure it is within speciﬁed limits.

Equipment Required

Pre-Adjustment Setup

Before carrying out any adjustments to the HP 37717C Jitter Transmitter Module,

perform the following pre-adjustment setup.

CAUTION This procedure uses the special display on the HP 37717C.

When using the display, ONLY modify the parameters shown.

Altering other parameters can damage instrument ﬁrmware - exit the

display after setup to prevent accidental damage.

1. Recall the HP 37717C DEFAULT SETTINGS as shown on 3-2.

2. Setup the HP 37717C display

as shown opposite.

Spectrum Analyzer : HP 8568B Opt 001

Oscilloscope : HP 54503A

75Ω/50Ω Matching Pad : HP 11825B

MODULE DEBUG

OTHER

HP 37717C Calibration Manual

Other manuals for HP 37717C