DigitalFlow™ XGM868i Service Manual 51
Appendix B. Calibration and Testing with PanaView
B.4.8 Testing Frequency Outputs
Frequency outputs may be added to the Model XGM868i by installing an appropriate option card in Slot 1. This option
card contains two or four frequency outputs, which are designated A, B, C and D.
Prepare for the testing procedure by connecting a frequency counter to Output A of the option card. See Figure 2 on
page 8 for frequency output wiring, and Figure 4 on page 12 to identify the OUT(+) and RTN(-) pins for Output A on
terminal block J2.
1. In the center pane of the Calibration/Test window, double-click on Slot 1.
2. Double-click on the desired output to open the Frequency Output menu. (Output A will be used as an example in
this manual.)
IMPORTANT: The procedure for testing Outputs B, C or D is identical to that for testing Output A. However, be sure to
reconnect the frequency counter on terminal block J2. See Figure 4 on page 12 for the correct pin
numbers.
3. At the Frequency prompt, enter a frequency (between 1 and 10,000 Hz) and click [Next Item]. Verify that the
frequency counter reads the correct value.
4. Repeat steps 2 and 3 to test all of the available frequency outputs. If any of the frequency outputs fails the test,
contact GE for assistance.
Click [Exit Page] to return to the Slot 1 window and calibrate additional inputs/outputs, or click [Exit Page] again to
close the Calibration/Test menu.
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