Ver.1.02
AO-1604CI3-PCI
3
-
Do not connect any of the outputs and power outputs to the analog or digital ground.
-
Do not connect the analog output signal to the other analog output signal and output signal of external
device. Doing so may malfunction.
-
Do not plug or unplug the interface connector to or from while the PC or external device power is turned on.
Doing so may malfunction.
-
The DA converter may cause glitches as it contains no deglitcher.
Connecting example of current output
The figure below shows an example connection using a flat cable as the
optional one (PCA37P).
The load register is connected. Please adjust the register load RL
connected with the current output of each channel to 500 or less
including the resistance of wiring.
Each current output of CN1 and analog ground is connected to the
resister load R
L
.
Current output connection (Flat cable)
The following figure shows an example of shielded cable connection.
Use shielded cable if the distance between the loading and board is long
or if you want to provide better protection from noise. Connect the
each current output of CN1 to the register load in the core wire of
shielded cable and connect the each analog ground of CN1 to the
register load in the shielding of shielded cable.
Current output connection (Shielded cable)
▼
CAUTION
-
Do not short the output signals to analog ground, digital ground, and/or power line. Doing so may damage
the board.
-
If connected to each output, a pull-
up resistor must be about 10 k to pull up with a 3.3V power source.
-
Each input accepts 5V TTL signals.
Control signals Connection
Input signals connection
To the “External Sampling Clock Input” and “External Start Trigger Input”,
connect current driven devices such as a switch and a transistor output
device. Input circuit is as follows. An external power supply is required
to drive the input circuit. The power capacity required at this time is
about 11 mA per input channel at 24 VDC (or about 5.5 mA at 12 VDC).
Input circuit
Connection example with open-collector output (current sink type)
Connection example with mechanical contact point
The relation of the data (internal logic) seen from the input signal and the
PC side as an example of the above figure is shown below.
Relation between the input signal and the data (internal logic) seen
from the PC side
Internal logic Contact point Input pin voltage level
0
OFF
High
1
ON
Low
Output signals connection
To the “Timer Output “ and “Settling Busy Output”, connect a relay
controller or a current driven control device such as a LED. Output circuit
is as follows.
An external power supply is required to drive the output circuit. The rated
output current is up to 50 mA per channel. The output transistor is not
associated with a surge voltage protection circuit. When the output
signal is used to drive the inductive load to a relay or lamp, apply surge
protection to the load side.
Output circuit
▼
CAUTION
When the power supply is turned on, all the outputs are turned off.
Current Output 0...3
Analog Ground 0...3
Target
BOARD
Cable
CN1
Register load R
L
CN1
Target
Coaxial cable
Analog Ground 0...3
Current Output 0...3
BOARD
Register load R
L
+Common
External
Trigger
Input
External
Sampling
Clock
Input
SW
External circuit
Board
External power supply
12V - 24VDC
Vcc
Opto-coupler
HCPL-M452
Vcc
HCPL-M452
Vcc
Vcc
Internal circuit
Opto-coupler
SW
Internal circuit
10k
Ω
2.2k
Ω
10k
Ω
2.2k
Ω
Input pin
+Common
Vcc
Vcc
External power supply
+12V - +24VDC
External device
Plus common
Open-collector
output
Minus common
Board
Internal
circuit
+Common
Vcc
Vcc
+12V - +24VDC
Contact point
Board
External power supply
Internal
circuit
Input pin
HCPL-0531
Vcc Vcc
2SD1782K
2SD1782K
-Common
Sampling
Busy
Output
+Common
Timer
Output
Board
External circuit
Opto-coupler
Internal
circuit
Internal
circuit
Loa di ng
Load in g
Opto-coupler
100
Ω
100
Ω
15k
Ω
15k
Ω
External power
supply
12V - 24VDC
