79
3.4.8
Method for current measurement on
the Scanner Card
Multi-point Scanner Card is not allowed of direct current measurements; however,
on-card shunt resistors can be installed for Scanner Card to allow for indirect current
measurements.
How to put a resistor
OP-41
Soldering the resistor on the channel to be measured at the surface of the land where parts
of the OP-41’s PCB are installed. Otherwise, carefully remove the plastic cover and solder
the resistor on the back side of the PCB by inserting it into the land of R1 or R2.
OP-41T
Install the current shunt resistors to a desired channel. Connect the current source to the
shunt resister as shown as figure below.
OP-42
Install the current shunt resistors to J21 or J23.
How to measure the current
The current measurement can be used via application software. It is made by combination of
the DCV measurement and
Current Shunt resistor. Accurately measure the resistance value
of the Current Shunt resistor, then setup
R and I.
(
R= shunt resistance value, I= Offset)
※
The measurement function of each channel will be limited to the current measurement as
long as the resistors of Scanner Card are not removed. Also please note that there is no
detection function of resistors installation.
To DMM Input
HI LO
HI LO
HI LO HI LO
HI LO
LO
HI
OUTA
HI LO
HI LO
HI LO HI LO
HI LO
CH1
CH2
CH3
CH4
CH5
LO
HI
A
Measurement
R
1
OUTB
CH6
CH7
CH8
CH9
CH10
R
2
A
S
hu
nt
S
hu
nt
Current
AC/DC
Measurement
Current
AC/DC
OP-41
J21
J23
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
CH9
CH10
OUTA
CH11
CH12
CH13
CH14
CH15
CH16
CH17
CH18
CH19
CH20
OUTB
HI
LO
LO
HI
HI
LO
LO
HI
HI
LO
LO
HI
HI
LO
LO
HI
HI
LO
LO
HI
HI
LO
LO
HI
HI
LO
LO
HI
HI
LO
LO
HI
HI
LO
LO
HI
HI
LO
LO
HI
HI
LO
LO
HI
Shunt
To DMM Input
A
AC/DC Current
Measurement
A
Shunt
OP-42
CH 1
CH 2
CH 3
CH 4
CH 5
OUTA
CH 6
CH 7
CH 8
CH 9
CH 10
OUTB
A
Shunt
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
A
Shunt
OP-41T
A
Shunt
Summary of Contents for DL-2060
Page 37: ...31 Figure 3 17 1 2 3 5 5 4...
Page 136: ...130...
Page 137: ...131...
Page 138: ...132 D DL 2060 s Dimension...