14 3: Operation
3.2 Keypad Functions
Table 2 summarizes the primary functions of the Certifier
®
FA Test
System keypad (Figure 9).
Top line
select key
Bottom line
select key
ON/OFF
key
DISPLAY
UNITS key
GAS SELECT
key
Backlight
on/off key
Figure 9. Controller Module Keypad
Table 2. Keypad Functions
Selects the measurement shown on the
top line of the display.
Selects the measurement shown on the
bottom line of the display.
Turns the system on (I) or off (O).
Selects the unit of measure for
measurements.
Selects the supply gas type for the
Certifier
®
FA.
Turns the controller module display
backlight on or off.
3.3 Displaying Test Measurements
Follow these steps to display test measurements:
1. Set up the Certifier
®
FA Test System and install it into the circuit.
2. Press the I/O (on/off) key to power up the system.