Interface 9834 Instruction Manual - page 19
CALIBRATION INSTRUCTIONS (CONT)
CALIBRATION USING THE REF SWITCH
1. Attach a calibration adaptor to J1.
2. Apply power to the instrument.
3. The TARE and CAL LED's on the front panel should be illuminated
4. Depress the TARE (S2) switch once. The TARE LED should extinquish.
The instrument should now display the UNTARED reading.
5. Depress the MODE (S1) switch once. Enable the CAL switch by selecting
CAL ON. Depress the MODE switch once more, then exit the MODE
sequence by depressing RST (S6)
6. Depress the CAL(S3) switch once. The CAL LED should extinquish. The
instrument should now display the UNCALIBRATED reading.
7. With no load on the transducer, verify the readout is approximately zero.
8. Depress the TARE(S2) switch once. The TARE LED should illuminate and
the readout should be ZERO +1 digit.
9. Depress and hold the REF switch. The display should read a value
greater than
01000
. For optimum performance the readout should be
closer to
19000
. Ignore decimal point.
While holding down the REF switch, depress the CAL (S3) switch once
The CAL LED should turn on and the readout should display the
CAL NUMBER +1 digit.
10. The REF CALIBRATION sequence is now complete.
NOTE:
Calibration information (tare and slope values) are maintained in
non-volatile memory and are updated every time CALIBRATION
Steps 8 and 9 are performed. TARING the display does not
change the scale factor (slope value) calculated when Step 9 is
completed.
Page 16