Setup Mode - Extech Instruments HD780 User Manual

Viewing MAX‐MIN‐AVG
For a given measurement session, this meter can record the highest (MAX) and the lowest (MIN)
readings for later recall.
1. Press the MAX‐MIN button to view the current MAX readings (MAX icon appears). The
readings on the display are now the highest readings logged.
2. Press the MAX‐MIN button again to view the current MIN readings (MIN icon appears). The
readings on the display are now the lowest readings logged.
3. Press MAX‐MIN button once more to view the current AVG readings (AVG icon appears).
The readings on the display are now the lowest readings logged.
To exit the MAX‐MIN mode, press and hold the MAX‐MIN button for 3 seconds. The MAX‐MIN‐
AVG icons will switch off and the meter will return to the normal operating mode.
Zero Adjust (Pressure)
The unit must be kept in the upright position when ZEROING or when taking measurements. To
ZERO the meter: Before use and without fittings attached to the meter, press and hold the H
button for 3 seconds or until the display shows all zeroes.
Setup Mode
Press and hold the
pressing the  or  buttons will cycle throughout the functions. Press
function. Setup is disabled in MIN/MAX mode. They are (in order):
OFFSET.........Store offsets for T1 and T2
SLP......Sleep mode
Note: Press and hold the SET button for three seconds when in the Set Mode to exit.
Offset
Use the offset option to compensate for a specific thermocouple temperature error or
mismatch. The allowable adjustment range is ± 5.0°C (9.0°F).
1. Plug the thermocouple into the T1 or T2 input connector located on either side of the meter.
2. Place the thermocouple in a known, stable environment.
3. Allow the readings to stabilize. The primary display shows the temperature, while the
bottom display shows the offset value.
4. Use the ▲ and ▼ buttons to adjust the offset until the primary reading matches the
calibration temperature. Press
mode option.
Sleep Mode (Auto Power OFF)
With sleep mode active, the meter automatically powers off after 20 minutes of inactivity. To
defeat this feature, while in SLP mode, press
mode OFF). Press  or  buttons to make a selection. Press
memory.
/SET button for three seconds to enter the Setup Mode. Momentarily
button to store the value and move to the next setup
to indicate ON (sleep mode ON) or OFF (sleep
6
to select the desired
to store the new setting in
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