Page 4
CL-B101D40HZ Manual (d0098)
STEP A Enter the Calibration Mode
1) Press the
P
and buttons at the same time. Display
toggles between [CAL] and [oFF].
2)
Press the or button. Display changes from [oFF] to
[on].
3)
Press the
P
button. Display toggles between [CAL] and
[out].
Note:
If at this point, the display skips directly to STEP C and toggles
between [ScAL] and the previous [ScAL] setting, the software
is detecting that the optional analog output hardware is NOT
installed.
STEP B Select Two Point Digital Calibration of Input Signal
1) Press the or button to select CAL [iP] for input signal
calibration.
2) Press the
P
button. Display toggles between [oFFS] and the
previous offset setting.
STEP C Set the Offset on the Digital Display
1) Using the and buttons, adjust the digital display to
the desired offset. This is the reading that the meter will dis-
play for a zero input
2) Press the
P
button. Display toggles between [ScAL] and
the previous Scale factor.
STEP D Set the Scale factor on the Digital Display
1)
Using the and buttons, adjust the meter display to
the desired Scale factor. The default value is 2000, for which a
2V input will read 2000. If the scale factor is changed the
display will change proportionately. Therefore if the Scale
factor is changed to 1000 then for the same 2V input the dis
play would read 1000.
2) Press the
P
button.
The Digital Rescaling is now complete
.
If the Digital Rescaling was successfully completed, the
menu branches to the Digital Span Selection for Bargraph
Display (see page 6), and the display flashes [bhi] and the
previous setting.
The
CL-B101D40HZ Manual (d0096)
meter may be rescaled without applying an external signal by changing the Offset and Scale
factor.
Offset is the reading that the meter will display for a zero input. The Offset may be set to any value from -1999 to +9999. The
default value of the Offset is 000
Scale factor is the gain of the meter. The displayed reading is directly proportional to the Scale factor. The default value of the
scale factor is 2000, but it may be set to any value between -1999 and +9999.
For an input of 2V a calibrated meter will read 2000 with the default Scale factor of 2000, 3000 with a Scale factor of 3000 and
500 with a Scale factor of 500
If a linear scale is represented by mx + b, then the Scale Factor corresponds to the slope ‘m’ and the Offset corresponds to
the intercept ‘b’
The internal Signal Span is limited to 3 V DC between – 1 V DC to + 2 V DC. Outputs from an Input Signal Conditioning module
that exceed these limits will cause the meter to indicate overrange.
Note
: Most input signal conditioners have provisions for analog calibration and scaling. If the meter’s digital Scale Factor is
set to 2000 and Offset set to 0000 then, any pre-calibrated signal condi-
tioner with an output that does not exceed – 1 V to + 2 V, will read correct-
ly in the meter without any further calibration.
Digital Rescaling
Digital Rescaling Procedure
MAIN MENU
Operational Display
Sub-menu
MODE
STEP A Calibration
Mode
STEP B Calibration
Mode
STEP C Offset
STEP D Scale
Factor
To Digital Span Selection for
Bargraph Display Page 6
cAL out/iP branch will only
appear if the analog output
option is installed, otherwise
cAL on goes directly to ZEro
setting
DIGITAL
RESCALING MODE
To Digital Span Selection
for Bargraph Display
See Page 7
To Two Point Analog
Output Range Setting
and Calibration
See Page 8
