FUTEK IPM52x (D520) Digital Display - Manual (Page 21)

20
c. Channel 1 only has a third method of setup
"SHUNT" cal method (Also known as R-CAL):
1. Raw input is displayed. This can be used to make sure
the correct input is being applied and/or that the meter is
properly measuring it. Push ENTER to advance.
2. "DEC PT" selects decimal point. Push SELECT key for
displaying decimal point selections and ENTER key to
confirm choice.
3. "DSP LO" (display low). Enter in display value
corresponding to low input value.
4. "DSP Hi" (display high). enter in display value
corresponding to shunt calibration resistor.
5. At this time the unit stores the values and waits for a
Function key (F1-F4) programmed for shunt calibration
to start the following calibration.
a. DPM measures input & sets display low equal to
input.
b. Shunt cal relay is closed automatically.
c. 5 sec later DPM measures input & sets display
high equal to shunt cal input.
d. Shunt relay opened.
e. Return to the RUN MODE.
2. Channel 3 (Math channel)
a. "TYPE” Select for Channel 3 to be one of following:
• "CHAN 1" Channel 1’s raw input count
• "CHAN 2" Channel 2’s raw input count
• "Add" Sum of Channel 1 + 2
• "Sub" Difference of Channel 1 – 2
• “Div” Result of Channel 1 ÷ 2
• “Mul” Multiply of CH1 x CH2
• “P1-P2” Peak1 – Peak2
b. Raw input is displayed. For exact calibration purposes you can
input the low and high inputs and record their value for entry in
the low and high input values below. NOTE: The low and high