Pressure Measurement
33
IM 767361-01E
Turning the Back Lighting ON/OFF
You can turn on a back light for the screen. The back light makes it easier to
see the screen when you are working in a dark area. However, the life of the
batteries will be shortened if the instrument is running on them while the back
light is ON.
1.
Press
LIGHT
.
2.
To turn the back lighting OFF, press
LIGHT
again.
HOLD RELATIVE
kPa
psi
InHg
InH
2
O
kgf/cm
2
mmH
2
O
mmHg
Lights up during relative display mode.
Lights up when the displayed
value is put on hold
The mark
moves to
the selected
unit.
Turning the ata Hold Function ON/OFF
Acquisition of data stops and the displayed value is put on hold.
The following operations can be performed while data hold is ON.
• Zero calibration
• Change the number of display digits
• Changing the units
• Setting AUTO 0% and AUTO 100%
• Relative value display ON/OFF • Displaying the measured value as a
percentage
• Data store/recall
• Displaying ERROR as a percentage
1.
Press the
HOLD
key. HOLD is displayed as shown upper.
2.
To cancel data hold, press the
HOLD
key again. This causes HOLD to disappear
from the screen.
Trigger
When data hold is ON, you can use the trigger function. Pressure is measured
one time after the trigger is activated. The trigger can be activated in the
following three ways.
• By pressing the
TRIG
key on the front panel
• By using a communications command (the “E” command, or the GET
interface message)
• By inputting an external (falling) trigger signal (when using the D/A option)
After the trigger is activated, the LED lights to indicate that data is being
sampled.
If a trigger occurs in the middle of the data sampling operation, data is sampled
again from that point. To make measurements by repetitively activating the
trigger, activate the trigger at an interval that is longer than the minimum input
interval below. If a continuous trigger occurrs before the minimum input interval,
the measured value is not updated.
Pressure Measurement
