Chapter 1. Calibration
8 DigitalFlow™ XGM868i Service Manual
1.7 Testing Totalizer Outputs
Totalizer outputs may be added to the Model XGM868i by installing an appropriate option card in Slot 1. This option
card contains two or four totalizer outputs, which are designated A, B, C and D.
1.7.1 Preparing for Testing
Prepare for the testing procedure by connecting a pulse counter to the desired output of the option card. See Figure 2
for totalizer output wiring, and Figure 4 on page 12 to identify the OUT(+) and RTN(-) pins for Output A on terminal block
J2.
Figure 2: Totalizer and Frequency Output Wiring
1.7.2 Testing the Output
1. From the Keypad Program, press the right arrow key to scroll to the CALIB menu. Press [Enter].
2. In the Cal window, scroll to Slot 1. Press [Enter].
Note: The Slot 1 option only appears at the above prompt if an option card is installed in this slot.
3. Scroll to the desired Output. (Output A will be used as an example in this manual.) Press [Enter].
IMPORTANT: The procedure for testing all the outputs is the same. However, when testing another output, be sure to
reconnect the pulse counter at terminal block J2. See Figure 4 on page 12 for the correct pins.
OUT
RTN
IN
Common
Load
Volts -
(Common)
Volts +
(Int. Pwr. Sup.)
OUT
RTN
+5V
200
:
Transmitter
Transmitter
Pulse Counter
Frequency Counter
Totalizer Output
Frequency Output
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