DigitalFlow™ GF868 Service Manual (1 and 2-Channel) 13
Chapter 1. Calibration
1.7 Testing the Totalizer/Frequency Outputs
Totalizer/Frequency outputs may be added to the Model GF868 by installing a Totalizer/Frequency Option Card in one
(or more) of the six expansion slots. Each option card includes four outputs, which are designated as A, B, C and D. To
test the outputs, connect a frequency counter to the card’s terminal block as shown in Figure 5. Refer to the menu map
in Figure 6 on page 15 as a guide.
Figure 5: Frequency Counter Connections
For this discussion, assume that the option card has been installed in Slot x.
Terminal Block (Option Card)
A
NO
A
COM
B
B
D
D
C
C
Frequency
1
8
Counter
IN
COM
COM
NO
COM
NO
COM
NO
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