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If the scale has been previously calibrated and you do not wish to change the
calibration setting, simply press the PRINT key twice and the internal calibration
factor will be retained and you will proceed to the Zero Tracking Range.
Load Calibration Weight
The display will now indicate Load=
value and placement of this amount of test weights on the scale platform.
1 . Make certain the scale platform is empty and free of debris, then place the desired
amount of calibrated test weights on the scale platform. It is recommended that a
minimum of 50% of the scale's capacity be used but 70% to 100% is preferred.
2. Press the PRINT key.
3. Determine the exact amount of test weights to be placed on the scale platform and enter
this value into the 758 by using the ZERO and UNITS keys in the same manner used to
enter the scale's capacity. Verify that the numbers entered are the same as the total
weight of test weights, and the least significant digit agrees with the scale interval.
4. Press the PRINT key.
After a moment the display will indicate the message unLoAd
weights be removed from the scale platform. Remove the weights then press the PRINT key.
The calculated calibration factor is now stored in the 758's nonvolatile memory.
Zero Tracking Range
The display will now indicate trA=
Automatic Zero Tracking Range. This is the value in scale divisions that will be automatically
zeroed off. For example, if the scale divisions are 0.5 and the zero tracking is set to 3, the 758
will automatically zero weights of 1.5 or less. Values of one (1) through nine (9) divisions are
available for the zero tracking range, or select ten (10) if 0.5 division zero tracking range is
desired. Entry of two (2) zeros (00) will disable the zero tracking feature. Use the ZERO key to
step through these available values. Once the proper value is shown press the PRINT key to
store the value.
Four Percent Zero Tracking Range Limit
The display will next indicate trL=
the zero tracking and the push button zero. Press the UNITS key to show current setting, then
press the ZERO key to select 1 (1=YES, enable) or 0 (0=NO, disable). If enabled (1), the zero
tracking and the push button zero is limited to 4 % of the scale capacity. If disabled (0), zero
tracking and the push button zero will operate up to the full capacity of the scale. Press the
PRINT key to save the setting.
Digital Filter Level Selection
The display will now show FLt=
Your 758 will arrive with the factory filter setting (1=minimal) already entered. Please check with
your scale service technician should you wish to change the programmed filter level and break
range. Four (4) levels of filtering (0, 1, 2 and 3) are available. They are as follows:
0 = NO FILTERING
1 = MINIMAL FILTERING
NOTE: Three (3), custom filtering is used when zero (0), one (1) or two (2) are inadequate.
Press the UNITS key to show the current setting. Then press the ZERO key to select the desired
level of filtering. Press the PRINT key to save the setting.
SETUP AND CALIBRATION, Cont.
Load= which is a prompt for the entry of the calibration weight
trA=. Press the UNITS key to show the value assigned to the
trL=. This is the prompt to select whether a 4% limit be placed on
FLt= which is the prompt for the selection of the digital filtering level.
unLoAd which is a request that the test
2 = MODERATE FILTERING
3 = CUSTOM FILTERING
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