Chapter 2 Components Layout Diagram and a Brief Description .......................................................................................5
2.1 The Main Component Layout Diagram ..................................................................................................................5
2.2 The Function Description for the Main Component ...............................................................................................5
2.2.1 Signal Input and Output Connectors............................................................................................................5
2.2.3 Physical ID of DIP Switch ...........................................................................................................................6
2.2.4 Status Indicator.............................................................................................................................................7
Chapter 3 Signal Connectors................................................................................................................................................8
3.1 Analog Input Connector (Differential Input)...........................................................................................................8
3.2 Signal Input/Output Connector ...............................................................................................................................8
3.3 Sync pulse signal input ...........................................................................................................................................9
3.4 Sync pulse signal output .........................................................................................................................................9
3.5 Clock input/output and trigger signal......................................................................................................................9
3.6 Methods of Realizing the Multi-card Synchronization .........................................................................................10
Chapter 4 The Instruction Trigger Function....................................................................................................................... 11
Chapter 5 Methods of using Internal and External Clock Function...................................................................................16
5.1 Internal Clock Function ........................................................................................................................................16
5.2 External Clock Function .......................................................................................................................................16
Chapter 6 Notes, Calibration and Warranty Policy............................................................................................................17
6.2 Analog Signal Input Calibration............................................................................................................................17
frequency division, the number of frequency division range: 63~16666667.
frequency division, main frequency =
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¾ Trigger Direction: negative, positive, either positive or negative trigger
¾ Trigger Level: 0~10V
¾ Analog Trigger Source (ATR)Input Range: 0~10V
¾ Digital Trigger Source (DTR): TTL
¾ Trigger Source DTR Input Range: standard TTL level
¾ AD Conversion Time: ≤1.25us
¾ Analog Input Impedance: 10MΩ
¾ Non-linear error: ±3LSB(Maximum)
¾ System Measurement Accuracy: 0.01%
¾ Operating Temperature Range: 0℃~50℃
¾ Storage Temperature Range: -20℃~70℃
Other features
Board Clock Oscillation: 50MHz
Dimension
143.6mm(L) * 102mm(W)*18mm(H)
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PCI8757 Data Acquisition V6.034
Chapter 2 Components Layout Diagram and a Brief Description
2.1 The Main Component Layout Diagram
2.2 The Function Description for the Main Component
2.2.1 Signal Input and Output Connectors
AI0, AI1, AI2, and AI3: Analog signal input ports
J1: Analog signal input and output port
IN: S
ync pulse signal input ports
OUT1, OUT2, and OUT3: Sync pulse signal output port
2.2.2 Potentiometer
RP1: AI0 analog signal input zero-point adjustment potentiometer
RP2: AI1 analog signal input zero-point adjustment potentiometer
RP3: AI2 analog signal input zero-point adjustment potentiometer
RP4: AI3 analog signal input zero-point adjustment potentiometer
RP5: AI0 analog signal input full-scale adjustment potentiometer
RP6: AI1 analog signal input full-scale adjustment potentiometer
RP7: AI2 analog signal input full-scale adjustment potentiometer
RP8: AI3 analog signal input full-scale adjustment potentiometer
RP9: Trigger level adjustment potentiometer
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2.2.3 Physical ID of DIP Switch
DID1: Set physical ID number. When the PC is installed more than one PCI8757 , you can use the DIP switch to set a
physical ID number for each board, which makes it very convenient for users to distinguish and visit each board in the
progress of the hardware configuration and software programming. The following four-bit numbers are expressed by the
binary system: When DIP switch points to "ON", that means "1", and when it points to the other side, that means "0." As
they are shown in the following diagrams: place "ID3" is the high bit."ID0" is the low bit, and the black part in the
diagram represents the location of the switch. (Test softwares of the company often use the logic ID management
equipments and at this moment the physical ID DIP switch is invalid. If you want to use more than one device that are
the same type in the same system at the same time, please use the physical ID as much as possible. As for the differences
between logic ID and physical ID, please refer to the function explanations of "CreateDevice" and "CreateDeviceEx" of
The Prototype Explanation of Device Object Management Function in PCI8757S software specification).
ON
ON
1
234
The above chart shows"1111", so it means that the physi cal ID is 15.
ON
ON
1
234
The above chart shows"0111", so it means that the physical ID is 7.
ON
ON
1
234
The above chart shows"0101", so it means that the physical ID is 5.
ID0ID1ID2ID3
DID1
ID0ID1ID2ID3
DID1
ID0ID1ID2ID3
DID1
ID3 ID2 ID1 ID0
OFF(0) OFF(0)OFF(0) OFF(0)
OFF(0) OFF(0)OFF(0) ON(1)
OFF(0) OFF(0)ON(1) OFF(0)
OFF(0) OFF(0)ON(1) ON(1)
OFF(0) ON(1) OFF(0) OFF(0)
OFF(0) ON(1) OFF(0) ON(1)
OFF(0) ON(1) ON(1) OFF(0)
OFF(0) ON(1) ON(1) ON(1)
ON(1) OFF(0)OFF(0) OFF(0)
ON(1) OFF(0)OFF(0) ON(1)
ON(1) OFF(0)ON(1) OFF(0)
ON(1) OFF(0)ON(1) ON(1)
ON(1) ON(1) OFF(0) OFF(0)
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Physical ID(Hex) Physical ID(Dec)
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
A 10
B 11
C 12
PCI8757 Data Acquisition V6.034
ON(1) ON(1) OFF(0) ON(1)
ON(1) ON(1) ON(1) OFF(0)
ON(1) ON(1) ON(1) ON(1)
D 13
E 14
F 15
2.2.4 Status Indicator
PWR: Power supply status indicator
TRIG: Trigger status indicator
PCI: Overflow status indicator
ADC: A/D working status indicator
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Chapter 3 Signal Connectors
3.1 Analog Input Connector (Differential Input)
ATR
AGND
CLKIN
1
2
34
6
CLKOUT
5
DGND
DTR
3.2 Signal Input/Output Connector
ATR
AGND
CLKIN
1
2
34
Pin definition
Pin Name Color Description
1 ATR Red Analog trigger signal input.
2 AGND White Analog ground.
3 CLKIN Green External clock input.
4 DTR Yellow Digital trigger signal input.
5 CLKOUT Blue Internal clock output.
6 DGND Black Digital ground.
6
CLKOUT
5
DGND
DTR
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3.3 Sync pulse signal input
IN
DGND
3.4 Sync pulse signal output
OUT1
OUT2
OUT3
DGND
3.5 Clock input/output and trigger signal
CLKOUT
CLKIN
DTR
AT R
AGND
DGND
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3.6 Methods of Realizing the Multi-card Synchronization
Three methods can realize the synchronization for the
PCI8757, the first method is using the cascade
master-slave card, the second one is using the common
external trigger, and the last one is using the common
external clock.
When using master-slave cascade card programs, the
master card generally uses the internal clock source
model, while the slave card uses the external clock
source mode. After the master card and the slave card are
initialized according to the corresponding clock source
mode. At first, start all the slave cards, as the main card
has not been activated and there is no output clock signal,
so the slave card enters the wait state until the main card
was activated. At this moment, the multi-card
synchronization has been realized. When you need to
sample more than channels of a card, you could consider
using the multi-card cascaded model to expand the
number of channels.
When using the common external trigger, please make
sure all parameters of different PCI8757 are the same. At
first, configure hardware parameters, and use analog or
digital signal triggering (ATR or DTR), then connect the
signal that will be sampled by PCI8757, input triggering
signal from ART pin or DTR pin, then click “Start
Sampling” button, at this time, PCI8757 does not sample
any signal but waits for external trigger signal. When
each module is waiting for external trigger signal, use
the common external trigger signal to startup modules, at
last, we can realize synchronization data acquisition in
this way. See the following figure:
Note: when using the DTR, use the internal clock mode
When using the common external clock trigger, please
make sure all parameters of different PCI8757 are the
same. At first, configure hardware parameters, and use
external clock, then connect the signal that will be
sampled by PCI8757, input trigger signal from ART pin
or DTR pin, then click “Start Sampling” button, at this
time, PCI8757 does not sample any signal, but wait for
external clock signal. When each module is waiting for
external clock signal, use the common external clock
signal to startup modules, at last, we realize
synchronization data acquisition in this way. See the
following figure:
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PCI8757 Data Acquisition V6.033
F
esult
Chapter 4 The Instruction Trigger Function
4.1 Internal Trigger Mode
When A/D is in the initialization, if the A/D hardware parameter ADPara.TriggerMode = PCI8757_TRIGMODE_SOFT,
we can achieve the internal trigger acquisition. In this function, when calling the StartDeviceProAD function, it will
generate A/D start pulse, A/D immediately access to the conversion process and not wait for the conditions of any other
external hardware.It also can be interpreted as the software trigger.
As for the specific process, please see the figure below, the cycle of the A/D work pulse is decided by the sampling
frequency.
Start Enable
Convert Pulse
The first working
pulse after the A/D
start pulse
igure 4.1 Internal Trigger Mode
4.2 External Trigger Mode
When A/D is in the initialization, if the A/D hardware parameter ADPara.TriggerMode = PCI8757_TRIGMODE_POST,
we can achieve the external trigger acquisition. In this function, when calling the StartDeviceProAD function, AD will
not immediately access to the conversion process but wait for the externaltrigger source signals accord with the
condition, then start converting the data. It also can be interpreted as the hardware trigger. Trigger source includes the
DTR (Digital Trigger Source) and ATR (Analog Trigger Source)
The trigger modes include the edge trigger and level trigger.
(一) A TR Trigger
AT R
Trigger Level
Comparer
Figure 4.2 Analog compare
R
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PCI8757 Data Acquisition V6.033
(1) Edge trigger function
Edge trigger is to capture the characteristics of the changes between the trigger source signal and the trigger level signal
to trigger AD conversion. When TriggerType=PCI8757_TRIGTYPE_EDGE, it is the edge trigger type.
When ADPara.TriggerDir = PCI8757_TRIGDIR_NEGATIVE, choose the trigger mode as the falling edge trigger. That
is, when the ATR trigger signal is on the falling edge, AD will immediately access to the conversion process, and its
follow-up changes have no effect on AD acquisition.
AD Start Pulse
The first working pulse
AD Working Pulse
after triggered
AT R
The falling edge
before the AD started
is invalid
The waiting time
The first falling edge after the
AD started is valid
Figure 4.3 Falling edge Trigger
Trigger Level
When ADPara.TriggerDir = PCI8757_TRIGDIR_POSITIVE, choose the trigger mode as rising edge trigger. That is,
when the ATR trigger signal is on the rising edge, AD will immediately access to the conversion process, and its
follow-up changes have no effect on AD acquisition.
When ADPara.TriggerDir = PCI8757_TRIGDIR_POSIT_NEGAT, choose the trigger mode as rising or falling edge
trigger. That is, when the ATR trigger signal is on the rising or falling edge, AD will immediately access to the
conversion process, and its follow-up changes have no effect on AD acquisition. This function can be used in the case
that the acquisition will occur if the exoteric signal changes.
(2)Triggering level function
Level trigger is to capture the condition that trigger signal ishigher or lower than the trigger level to trigger AD
conversion. When ADPara.TriggerType = PCI8757_TRIGTYPE_PULSE, it is level trigger type.
When ADPara.TriggerDir = PCI8757_TRIGDIR_NEGATIVE, AD is in the conversion process if the ATR is lower than
the trigger level. And AD conversion will automatically stop if the ATR is higher than the trigger level. AD's work
status changes with changes of ATR.
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PCI8757 Data Acquisition V6.033
AD Start Pulse
AD Working Pulse
Analog Trigger Signal
The falling edge before
the AD started is invalid
The first pulse after
the AD triggered
The waiting time
The low level after the AD
started is valid
Figure 4.4 Low Level Trigger
Pause
mode
Trigger Level
The low level after the AD
started is valid
When ADPara.TriggerDir = PCI8757_TRIGDIR_POSITIVE, AD is in the conversion process if the ATR is higher than
the trigger level. And AD conversion will automatically stop if the ATR is lower than the trigger level. AD's work status
changes with changes of ATR.
When ADPara.TriggerDir = PCI8757_TRIGDIR_POSIT_NEGAT, it means the trigger level is low. The effect is the
same as the internal software trigger.
When the trigger signal is the analog signal, using the ATR trigger source. Trigger level needs to be set when using the
ATR trigger source, two channels’ output voltages of DA (AO0 and AO1) codetermines the trigger level; in this case,
we need set 0-channel output voltage higher than 1-channel output voltage. There are two trigger types: edge trigger
and level trigger
(二) DTR T rigger
(1) Edge trigger function
Edge trigger is to capture the characteristics of the changes between the trigger source signal and the trigger level signal
to trigger A/D conversion.
When TriggerType = PCI8757_TRIGTYPE_EDGE, it is edge trigger.
When ADPara.TriggerDir = PCI8757_TRIGDIR_NEGATIVE, choose the trigger mode as the falling edge trigger. That
is, when the trigger signal is on the falling edge, A/D will immediately access to the conversion process, and its
follow-up changes have no effect on A/D acquisition.
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PCI8757 Data Acquisition V6.033
F
A/D Start Pulse
Digital Trigger Signal
The falling edge before
the A/D started is invalid
A/D Working Pulse
A/D Start Pulse
A/D Working Pulse
Analog Trigger Signal
The falling edge before
the A/D started is
invalid
The waiting time
The first working
pulse after triggered
Figure4.5 Digital Trigger Source
The first working
pulse after triggered
The waiting time
igure4.6 Analog Trigger Source,Falling edge Trigger
The first falling edge after the
A/D started is valid
,
Falling edge Trigger
The first falling edge after the
A/D started is valid
Trigger Level
When ADPara.TriggerDir = USB2815_TRIGDIR_POSITIVE, choose the trigger mode as rising edge trigger. That is,
when the trigger signal is on the rising edge, A/D will immediately access to the conversion process, and its follow-up
changes have no effect on A/D acquisition.
When ADPara.TriggerDir = USB2815_TRIGDIR_POSIT_NEGAT, choose the trigger mode as “either rising or falling
edge trigger”. That is, when the trigger signal is on the rising or falling edge, A/D will immediately access to the
conversion process, and its follow-up changes have no effect on A/D acquisition. This function can be used in the case
that the acquisition will occur if the exoteric signal changes.
(2)Level trigger function
Level trigger is to capture the condition that trigger signal ishigher or lower than the trigger level to trigger AD
conversion.
When ADPara.TriggerType = PCI8757_TRIGTYPE_PULSE, it is level trigger.
When ADPara.TriggerDir = PCI8757_TRIGDIR_ NEGATIVE, it means the trigger level is low. When trigger signal is
low level, AD is in the conversion process, once the trigger signal is in the high level, A/D conversion will
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PCI8757 Data Acquisition V6.033
F
F
automatically stop, when the trigger signal is in the low level again, A/D will re-access to the conversion process that is,
only converting the data when the trigger signal is in the low level.
A/D Start Pulse
Digital Trigger Signal
The high level before
the A/D started is
invalid
A/D Working Pulse
A/D Start Pulse
A/D Working Pulse
Analog Trigger Signal
The low level before
the A/D started is
invalid
The waiting time
The first working pulse
after triggered
igure4.7 Digital Trigger Source,High Level Trigger
The first working pulse
after triggered
The waiting time
igure4.8 Digital Trigger Source,Low Level Trigger
pause
mode
The first low level after the
A/D started is valid
pause
mode
Trigger Level
Low level after the A/D
started is valid
When ADPara.TriggerDir = PCI8757_TRIGDIR_POSITIVE, it means the trigger level is high. When trigger signal is
in high level, A/D is in the conversion process, once the trigger signal is in the low level, A/D conversion will
automatically stop, when the trigger signal is in the high level again, A/D will re-access to the conversion process, that
is, only converting the data when the trigger signal is in the high level.
When ADPara.TriggerDir = PCI8757_TRIGDIR_POSIT_NEGAT, it means the trigger level is low. The effect is the
same as choosing the internal software trigger.
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PCI8757 Data Acquisition V6.033
Chapter 5 Methods of using Internal and External Clock Function
5.1 Internal Clock Function
Internal Clock Function refers to the use of on-board clock oscillator and the clock signals which are produced by the
user-specified frequency to trigger the A/D conversion regularly. To use the clock function, the hardware parameters
ADPara.ClockSource = PCI8757 _CLOCKSRC_IN should be installed in the software. The frequency of the clock in
the software depends on the hardware parameters ADPara.Frequency. For example, if Frequency = 100000, that means
A/D work frequency is 100000Hz (that is, 100 KHz, 10uS/point).
5.2 External Clock Function
External Clock Function refers to the use of the outside clock signals to trigger the A/D conversion regularly. The clock
signals are provide by the CLKIN pin. The outside clock can be provided by PCI8757 clock output (CLKOUT), as well
as other equipments, for example clock frequency generators. To use the external clock function, the hardware
parameters ADPara.ClockSource = PCI8757_CLOCKSRC_OUT should be installed in the software. The clock
frequency depends on the frequency of the external clock, and the clock frequency on-board (that is, the frequency
depends on the hardware parameters ADPara.Frequency) only functions in the packet acquisition mode and its
sampling frequency of the A/D is fully controlled by the external clock frequency.
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PCI8757 Data Acquisition V6.033
Chapter 6 Notes, Calibration and Warranty Policy
6.1 Notes
In our products’ packing, user can find a user manual, a PCI8757 module and a quality guarantee card. Users must
keep quality guarantee card carefully, if the products have some problems and need repairing, please send products
together with quality guarantee card to ART, we will provide good after-sale service and solve the problem as quickly
as we can.
When using PCI8757, in order to prevent the IC (chip) from electrostatic harm, please do not touch IC (chip) in the
front panel of PCI8757 module.
6.2 Analog Signal Input Calibration
Every device has to be calibrated before sending from the factory. It is necessary to calibrate the module again if users
want to after using for a period of time or changing the input range. PCI8757 default input range: ±10V, in the manual,
we introduce how to calibrate PCI8757 in ±10V, calibrations of other input ranges are similar.
Prepare a digital voltage instrument which the resolution is more than 5.5 bit, install the PCI8757 module, and then
power on, warm-up for fifteen minutes.
1) Zero adjustment:Select AI0; connect a DC voltage source with value equal to 0V to AI0.Adjust RP1 until the
input value 0.000V. RP2, RP3, RP4 correspond to AI1, AI2, AI3.
2) Full-scale adjustment: Select AI0; connect a DC voltage source with value equal to 9999.69mV to AI0. Adjust
RP5 until the input value 9999.69mV. RP6, RP7, RP8 correspond to AI1, AI2, AI3.
3) Repeat steps above until meet the requirement.
6.3 W arranty Policy
Thank you for choosing ART. To understand your rights and enjoy all the after-sales services we offer, please read the
following carefully.
1. Before using ART’s products please read the user manual and follow the instructions exactly. When sending in
damaged products for repair, please attach an RMA application form which can be downloaded from:
www.art-control.com.
2. All ART products come with a limited two-year warranty:
¾ The warranty period starts on the day the product is shipped from ART’s factory
¾ For products containing storage devices (hard drives, flash cards, etc.), please back up your data before sending
them for repair. ART is not responsible for any loss of data.
¾ Please ensure the use of properly licensed software with our systems. ART does not condone the use of pirated
software and will not service systems using such software. ART will not be held legally responsible for products
shipped with unlicensed software installed by the user.
3. Our repair service is not covered by ART's guarantee in the following situations:
¾ Damage caused by not following instructions in the User's Manual.
¾ Damage caused by carelessness on the user's part during product transportation.
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PCI8757 Data Acquisition V6.033
¾ Damage caused by unsuitable storage environments (i.e. high temperatures, high humidity, or volatile chemicals).
¾ Damage from improper repair by unauthorized ART technicians.
¾ Products with altered and/or damaged serial numbers are not entitled to our service.
4. Customers are responsible for shipping costs to transport damaged products to our company or sales office.
5. To ensure the speed and quality of product repair, please download an RMA application form from our company
website.
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PCI8757 Data Acquisition V6.033
Products Rapid Installation and Self-check
Rapid Installation
Product-driven procedure is the operating system adaptive installation mode. After inserting the disc, you can select the
appropriate board type on the pop-up interface, click the button【driver installation】; or select CD-ROM drive in
Resource Explorer, locate the product catalog and enter into the APP folder, and implement Setup.exe file. After the
installation, pop-up CD-ROM, shut off your computer, insert the PCI card. If it is a USB product, it can be directly
inserted into the device. When the system prompts that it finds a new hardware, you do not specify a drive path, the
operating system can automatically look up it from the system directory, and then you can complete the installation.
Self-check
At this moment, there should be installation information of the installed device in the Device Manager (when the
device does not work, you can check this item.). Open "Start -> Programs -> ART Demonstration Monitoring and
Control System -> Corresponding Board -> Advanced Testing Presentation System", the program is a standard testing
procedure. Based on the specification of Pin definition, connect the signal acquisition data and test whether AD is
normal or not. Connect the input pins to the corresponding output pins and use the testing procedure to test whether the
switch is normal or not.
Delete Wrong Installation
When you select the wrong drive, or viruses lead to driver error, you can carry out the following operations: In
Resource Explorer, open CD-ROM drive, run Others-> SUPPORT-> PCI.bat procedures, and delete the hardware
information that relevant to our boards, and then carry out the process of section I all over again, we can complete the
new installation.
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