Block Diagram; How To Connect The Connectors - Contec DIG-100M1002-PCI Manual

Block Diagram

CH0 CH1
BNC
BNC
Impedance
Impedance
50 Ω / 1M Ω
50 Ω / 1M Ω
Coupling Coupling
AC / DC / AC / DC /
GND GND
Noise Filter Noise Filter
ON / OFF ON / OFF
GAIN GAIN
OFFSET OFFSET
AD Converter AD Converter
Memory
PCI BUS

How to connect the connectors

Connector shape
To connect an external device to this product, plug
the cable from the device into the interface
connector (CH0, CH1, CLK, TRG) shown below.
This product has the following interface connectors:
the (CH0, CH1 connector) for analog inputs, (CLK
connector) for reference clock and (TRG connector)
for external trigger I/O.
Interface connector
(CH0, CH1, CLK, TRG)
CN6
SW1
CH1
cTEST Series Digitizer
DIG-100M1002-PCI
CH0
MADE IN JAPAN
CLK
TRG
(CH0, CH1, CLK, TRG)
* Please refer to page 3 for more information on the supported cable.
Option
BNC cable
BNC-Bxxx
* Please refer to page 3 for more information on the supported cable.
DIG-100M1002-PCI
TRG
CLK
BNC BNC
Oscillator
To Other Board
Timing SyncBUS
Connector
Controller
Controller
CH1
CN7 CH1
CH0
8 - BNC connector [plug type]
CH0
B6252HB-NPP3G-50
[mfd. by AMPHENOL TAIWAN]
CLK
or equivalence to it
CLK
TRG
TRG
Connector Pin Assignment
Pin Assignment of CH0, CH1, CLK, TRG
Analog Input 0 - 1 Analog input signals. The numbers correspond to channel
numbers.
Analog Ground Analog ground common to analog input signals.
External trigger input signal used for sampling start condition
and sampling clock etc.
Trigger Input
Combined use of the external trigger output and the connector.
(IN)
Can be only used as either external trigger input or external
trigger output.
Outputs internal sampling clock and waveform judgment result
as status signal.
Trigger Output
Combined use of the external trigger input and the connector.
(OUT)
Can be only used as either external trigger input or external
trigger output.
Reference clock I/O signal
Reference CLK
Can be only used as either input or output.
Digital Ground Digital ground common to digital I/O signals.
CAUTION
Please do not connect the analog ground and the digital
ground. The measurement result of the analog signal may
be influenced.
Connecting the Analog Input Signal
Connection Example of Single-ended Input
The following figure shows an example of shield cable
connection. Connect BNC connector of CH0/CH1 for each
anlog input channel respectively, the wick line to the signal line
and the shield braid to the ground.
Connecting the Single-ended Input (shield cable)
BOARD CH0/CH1 Shield cable
Analog Input 0/1
Analog Ground
CAUTION
Do not touch the external connector (BNC connector) when
the power is on. Otherwise this may malfunction, cause a
failure due to static electricity.
When high frequency more than 1/2 of the sampling
frequency is included in the signal source, alias occurs, and
the signal might not be acquired normally.
If this product and the signal source receive noise or the
distance between this product and the signal source is too
long, data may not be input properly.
The analog signal to be input should not exceed the
maximum input voltage (based on this product analog
ground). If it exceeds the maximum voltage, this product
may be damaged.
Input data remains indeterminate when no input pin is
connected. The analog input pin for the channel not
connected to the signal source must be connected to the
analog ground. Please do not connect terminal resistances
such as 50Ω and75Ω instead of short circuit.
When input impedance is 50Ω, the output current (output
voltage/50) from the signal source grows. Please confirm
the current value of the connected signal source first.
When the ground is set to input coupling type, please
Ver.1.03
Signal Source
4