AT520/AT520SE/AT520L/AT520M User’s Guide
24
Table 6-4
Output Signals
19 Lo
Resistance
lower signal.(Low)
20 IN
Resistance
Pass.(Low)
21
Hi
Resistance upper signal.(Low)
22
GD
Pass signal. (Low)
23
NG
Fail signal. (Low)
26
EOC
Measurement completion signal. (Low)
Table 6-5
Power Signal
2 EX-VCC
External
VCC
(5~35VDC)
3 EX-GND
External
GND
6.2
Connection
method
Figure 6-1
How to insert the cables
Step1: Push down the button with an appropriate tool, such as a flathead screw driver
Step2: With the button pushed down, insert the cables into the holes
Step3: Release the button and the cables secured.
Recommended wire: Single strand 0.65mm dia.(AWG #22)
Multi-strand
0.32
mm
2
. (AWG #22)
Usable limits:
Single strand 0.32 to 0.65mm dia.
Multi-strand
0.08
to
0.32mm
2
.
Standard insulation stripping length: 10mm
Button pressing tool: Blade screwdriver (shaft diameter
3, tip width 2.6mm)
To prevent damage to the handler, avoid applying voltage or current exceeding the
rated value.
In order to avoid electric shock, turn off the instrument power before plugging in or
plugging any of the interface connectors.
AT520 handler output signal CAN NOT drive relay. If you need to connect a relay,
use external transistor to drive.
Avoid short-circuiting the external output and control terminals.
6.3
Power
Rating
Input/Output
device
Logic
Electrical
requirements
OUTPUT Corrector out with
pull-up resistance
Negative logic
35VDC
50mADC max
INPUT
Negative
logic
50mADC
max
EXT.DCV DC voltage input
35VDC max
