11
Figure 5.0-1: System set up for Energy test
1. Connect the BNC connector from the built-in CT-1 current transducer into
CH-1 of the oscilloscope.
The Terminator provided must be used in order
to match the 50 Ohm output impedance of the CT-1 to the 1 MegOhm
impedance of the scope.
2. Connect the 25 pin – 9-pin cable to the USB – 9-pin adapter and 25-pin sub-
D connector on the rear of the Model 4431-EV
3. Connect the USB - USB cable to the 1
st
computer USB port and the other
end to the USB-9-pin sub-D adapter.
2. Connect the USB – USB cable from the oscilloscope to the 2
nd
USB port on
the computer
3. If a printer is used connect it to the 3
rd
USB port on the computer
4. Confirm that the red jumpers located on the sides of the capacitive sensor
are plugged in the center and front .040 pin jacks. This programs the
capacitive sensor for current measurements.
5. Plug the phono plug from Foot Switch, if used, into the REMOTE
DISCHARGE jack on the rear panel of the Model 4431
6. Power up all instruments
7. Set the FUNCTION select switch to
MAN nJ
if the test is to be controlled by
the operator or to
AUTO nJ
if the test is to be controlled by the computer
8. For waveform verification in the MAN mode, set the oscilloscope VERTICAL
sensitivity to 500mV, the time base to 100nsec and the trigger level to
500mV. For bag testing start with settings of 20 or 50mV, 20nsec and 50 or
75mV respectively. Otherwise, the ETS Energy Calculation Program
automatically sets the correct scope parameters.
5.2 EIA 541 (Voltage Differential)
Refer to Figure 5.0-2 for the set up for the voltage differential test.
