Extech Instruments 380801 User Manual page 14

Using Two Power Analyzers
Measure W and W
RS TS
1. Connect the R-phase of the power source to the black terminal of the input
voltage of power analyzer 1.
2. Connect the S-phase of the power source to the red terminal of the input
voltage of power analyzer 1.
3. Plug the R-phase of the device to be tested to the black terminal of the output
load of power analyzer 1. Do not short the R-phase of the load to the R-phase
of the input power source.
4. Record the reading of W
5. Connect the T-phase of the power source to the black terminal of the input
voltage of power analyzer 2.
6. Connect the S-phase of the power source to the red terminal of the input
voltage of power analyzer 2.
7. Plug the T-phase of the device to be tested to the black terminal of the output
load. Do not short the T-phase of the device to be tested to the T-phase of the
input power source.
8. Record the reading of W
(RST phases must be correctly identified)
displayed on the 'W' LCD of power analyzer 1.
RS
displayed on the Watt LCD of power analyzer 2.
TS
14 380801/803 Version 4.0 7/05