Practical Instrument Electronics 850 - Manual (Page 9)

Page 7
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w SOURCE/OFF/READ Switch
Select “ SOURCE” to output mA, V, pH, T/C, Ω, RTD or frequency.
Select “ READ” to read mA, V, T/C, Ω, RTD, pressure or frequency.
Select “ OFF” to turn off the 850.
e EZ-DIAL™ KNOB
SOURCE: Turn the knob to adjust the output level. Turn clockwise to
increase the output, counter clockwise to decrease the output in one
least significant digit step at a time. Push down and turn the
EZ-DIAL knob for faster dialing.
Press and hold the knob for two seconds to store desired
EZ-Check™ HI/LO points in SOURCE mode. Continue to press and
hold the knob for two more seconds to start the automatic ramping.
READ: Press and hold to transfer the current temperature into
the EZ-Check™ MIN/MAX points. This clears the MIN/MAX
readings which will update as the input value changes.
SELECTING FUNCTIONS
The EZ-DIAL knob is used to setup the PIE 850 to match the
instrument to be calibrated or signal to be measured. Each time
you turn on the PIE 850 the LCD displays the following screen
for about 1 second followed by operating in the function used the
last time it was operated.
Double Click the EZ-DIAL knob to change the function of the
calibrator and to select ranges, units and other user settings.
Each function (mA, V, T/C, Ohms, RTD, Frequency) has up to
four pages of menus. The first menu page has settings for the
function and the last menu page has settings for STEPPING,
AUTO OFF and BACKLIGHT. Settings are remembered even
with the power off but are reset when the batteries are changed.
PIE 850
DOUBLE CLICK
EZ-DIAL KNOB
FOR CONFIGURATION
Operating Instructions
Basic Operation