Configuration Manual Owner manual

Publication 1757-PM002A-EN-E - June 2006
Set Up A System 2-17
Another way of testing the signal quality of a network is to use an oscilloscope.
We recommend a hand-held battery-operated unit because of its small size and
ease of use. The Fluke 199-3 ScopeMeter is one such scope.
Figure 2.9 Fluke 199-3 200MHz ScopeMeter
Other scopes that can be used include the TPI-E1505, the Extech-381275
(
www.professionalequipment.com), and the Techtronix THS700 Series
(www.tek.com).
Signal Analysis
Oscilloscopes, whether portable or stationary, from 50MHz to 1GHz, can be
used to capture and examine the waveform. The power supply waveform
should be a +/- 0.75 VDC to +/- 1.00 VDC square wave riding on the 9 V
DC to 32 V DC steady power supply with < 0.10 V DC ripple. The sharper
the rising and falling edges of the waveform, the better the data transfer. The
physical media of a system will determine what shape the waveform takes.
The signal is a current modulated ±10mA signal on a 50 test load. This
generates a 1.0 Vpp signal. A valid signal can range from 150mVpp up to
1.0Vpp and noise must not exceed 75mvpp (
Figure 2.10).