IM CA71-E
10-3
Method of Calibrator
Adjustment
1
2
3
4
5
6
7
8
9
10
11
12
13
App
10.2 Adjusting Source Functions
10.2 Adjusting Source Functions
Table 10.1 Adjustment Points of Source Functions
Range
Adjustment Points *
1
Remarks
CAL 0
CAL FS
100 mV
0
100 mV
---
1 V
0
1 V
---
10 V
0
10 V
---
30 V
0
30 V
---
20 mA
0
20 mA
See the figure below.
20 mA SINK
0.1 mA
20 mA
See the figure below.
400 Ω/1 mA
0
400 Ω
Four-wire connection
400 Ω/5 mA
0
400 Ω
See the figure below.
*1: Adjust the source functions so that the readings of the calibration standard
(output values of the CA51/71) match the adjustment points listed above.
TIP
• You can also select only the range in need of readjustment to adjust
it separately.
• Always make zero-point (0) adjustments together with full-scale (FS)
adjustments.
CA71
24V
20 mA
20 mA output
SINK
SINK
H
L
Power
supply
H
L
DMM
Voltage range
CA71
5 mA
H
L
High-precision
current source
Standard resistor
100 Ω
20 mA and SINK ranges
400
Ω
/5 mA
DMM
Voltage range
Hook-ups for Adjustment
Step 1:
Press the
key while simultaneously holding down
the
key. The LCD shows
.
Step 2:
Pressing the
key enters the source CAL mode.
The
indicator blinks on the LCD and the symbol
appears.
The calibrator is now ready for the zero-point adjustment of
source functions.
