Chapter 1. Calibration
12 DigitalFlow™ GS868 Service Manual
1.7  Testing the Alarm Relays (cont.)
Note: The procedure for testing Alarm Relay A is identical to that for testing Alarm Relays B and C. However, make sure 
that the ohmmeter is connected to the desired normally-open or normally-closed contact of the currently 
selected relay. See Figure 4 on the previous page for the correct pin numbers on the option card terminal block.
4. Pressing 
[F1] (CLOSE) should yield an ohmmeter reading of about zero. Pressing [F2] (OPEN) should yield an infinite 
ohmmeter reading. 
5. Press 
[F3] to EXIT.
6. Repeat the above procedure until both the normally-open and normally-closed contacts for all three alarm relays 
have been tested. Then go to Procedure Options below.
Procedure Options
You have completed testing the alarm relays. Do one of the following:
• To calibrate/test additional slots, press [F4] (EXIT) and proceed to the appropriate section.
• To leave the Calibration Menu, press [F4] (EXIT) twice.