Honeywell Chadwick-Helmuth 8500C+ User Manual

5-16 Chadwick-Helmuth A Business Unit of Honeywell International, Inc.
Chapter 5 - Maintenance And Repair
Window: Flat top
Source: Off
Input: DC Coupling, Auto range on
Units: X: Hz, Y: Volt
Vertical Scale: Linear
b. Reconnect Velocimeter coax cable to cable 8998.
c. Set up signal generator as follows: For channel connected to Velocimeter input, set to
Frequency = 1722 +/- 1 Hz, Waveform = Sine wave, Amplitude = 19.0 mV pk. Monitor
signal generator output with spectrum analyzer with marker at 1722 Hz. Adjust signal
generator output channel connected to Velocimeter input until amplitude is 13.44 +/- 0.05
mV RMS.
d. Press SETUP key.
e. Key in 500 (Hz) with numeric keys in MAXIMUM FREQUENCY field.
f. Press ENTER key.
g. Wait 10 seconds.
h. Press START key.
i. Verify that no signal aliasing remains on display above 0.005 IPS.
5.5.1.5.2 10 kHz Anti-Aliasing
a. Set up spectrum analyzer to view a 13.44 mVrms, 15,600 Hz signal.
Use the following analyzer settings:
Frequency: Baseband, Start: 0 Hz, Stop: 20000 Hz
Trigger: Free run
Average: Off
Window: Flat top
Source: Off
Input: DC Coupling, Auto range on
Units: X: Hz, Y: Volt
Vertical Scale: Linear
b. Turn on signal generator and set up as follows: For channel connected to Velocimeter
input, set to Frequency = 15,600 +/- 10 Hz. Waveform = Sine wave, Amplitude = 19.0 mV
pk. Monitor signal generator output with spectrum analyzer with marker at 15,600 Hz.
Adjust signal generator output channel connected to Velocimeter input until amplitude is
13.44 +/- 0.05 mV RMS.
c. Press SETUP key.
d. Key in 10000 (Hz) with numeric keys in MAXIMUM FREQUENCY field.
e. Press ENTER key.
f. Wait 10 seconds.

Honeywell Chadwick-Helmuth 8500C+ Specifications

General

Brand	Honeywell
Model	Chadwick-Helmuth 8500C+
Category	Measuring Instruments
Language	English