CALIBRATION:
The calibration mode is entered by pressing the Normal [Enter] and
ABS/REL [Exit] switches simultaneously. Note: This is the only method to check or
change the calibration of this unit externally.
PROTECTION CODE
Before any calibration can be performed on the unit a unique security code must be
entered. If the code is not entered correctly the unit will automatically revert to display
and acquisition mode; otherwise, the user is allowed to proceed with the calibration
sequence. To enter the code use the standard sequence of operations explained in the
switch functions and setup at the begining of your manual.
PROTECTION CODE PROGRAMMING
A different protection code can be programmed at this time. The code can be
anywhere in the range 0 - 255. If a new code is not required simply press ENTER to
continue with the calibration sequence.
SPAN NUMBER PROGRAMMING
The span number is the display reading that is associated with the input
obtained during the DEAD WEIGHT STAY portion of the calibration sequence (a dis-
play reading of zero is automatically associated with the DEAD WEIGHT ZERO cali-
bration step). The span number can be programmed to a maximum of 32767 display
counts. Note: If your deadweight stay calibration will be performed using something
less than the actual expected full-scale input, the desired reading for the dead weight
stay calibration input should still be used as the span number.
(Example: There’s a 10,000 Lbs. load cell but dead weight, the shunt cal resistor avail-
able is for only 8000 Lb., calibrate as shown below. Unit will respond to the full scale
of 10,000Lbs. even through unit is calibrated at 8000 Lbs.)
DEAD WEIGHT ZERO
This is the zero (null) point calibration step. Set the transducer or calibrator
for zero output, allow sufficient time for the reading to stabilize, then press the
ENTER switch to store the new zero calibration data.
DEAD WEIGHT STAY
This is the span point calibration step. Check to make sure that MV/V set-
ting and excitation is selected to match the transducer. Set the transducer or calibrator
for full-scale output, allow sufficient time for the reading to stabilize, then press the
ENTER switch to store the new span calibration data.
7
Summary of Contents for DP-7600
Page 21: ...SCHEMATIC DP 7600 Top Board 16...
Page 22: ...SCHEMATIC DP 7600 Top Board 17...
Page 23: ...SCHEMATIC DP 7600 Top Board 18...
Page 24: ...SCHEMATIC DP 7600 Bottom Board 19...
Page 25: ...SCHEMATIC DP 7600 Bottom Board 20...
Page 26: ...SCHEMATIC DP 7600 Analog Input Option Board 21...
Page 27: ...SCHEMATIC DP 7600 Output Option Board 22...
Page 28: ...SCHEMATIC DP 7600 RS232 RS485 Option Board 23...
