Chapter 1. Calibration
12 DigitalFlow™ GF868 Service Manual (1 and 2-Channel)
1.6 Testing the Alarm Relays (cont.)
1.6.1 Accessing the Calibration Menu
1. Press the [CAL] key to enter the Calibration Program.
2. Press [Fx] to calibrate the desired slot. (The option bar will include a slot listing for each installed option card.)
3. Press [F1]-[F3] to select alarm relay A, B or C, respectively.
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 page 11 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 proceed to Procedure Options below.
1.6.1a 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.
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