Overton Check-MATE User manual

E M B E D D E D T EST S O LU T I O N S
USER’S MANAUAL
Overton Instruments, Inc
5431 Auburn Blvd. #196
Sacramento, CA 95841
.microATE.net
CHECK-MATE
Multifunction DAQ Module

CHECK-MATE USER’S MANUAL
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NOTICE The information contained in this document is subject to change
ithout notice. To the extent allo ed by local la , Overton Instru-
ments (OI), shall not be liable for errors contained herein or for
incidental or consequential damages in connection ith the fur-
nishing, performance, or use of this material. No part of this docu-
ment may be photocopied, reproduced, or translated to another
language ithout the prior ritten consent of OI.
WARNING The instrument you have purchased and are about to use may
NOT be an ISOLATED product. This means that it may be sus-
ceptible to common mode voltages that could cause damage to
the instrument. SUCH DAMAGE IS NOT COVERED BY THE
PRODUCT’S WARRANTY. Please read the follo ing carefully
before deploying the product. Contact OI for all questions.
WARRANTY OI arrants that this instrument ill be free from defects in materi-
als and orkmanship under normal use and service for a period of
90 days from the date of shipment. OI obligations under this ar-
ranty shall not arise until the defective material is shipped freight
prepaid to OI. The only responsibility of OI under this arranty is
to repair or replace, at it’s discretion and on a free of charge ba-
sis, the defective material. This arranty does not extend to prod-
ucts that have been repaired or altered by persons other than OI
employees, or products that have been subjected to misuse, ne-
glect, improper installation, or accident. OVERTON INSTRU-
MENTS SHALL HAVE NO LIABILITY FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES OF ANY KIND ARISING OUT OF
THE SALE, INSTALLATION, OR USE OF ITS PRODUCTS.
SERVICE POLICY 1. All products returned to OI for service, regardless of arranty
status, must be on a freight-prepaid basis.
2. Unless other noted, OI ill repair or replace any defective
product ithin 10 days of its receipt.
3. For in- arranty repairs, OI ill return repaired items to buyer
freight prepaid. Out of arranty repairs ill be returned ith
freight prepaid and added to the service invoice.

CHECK-MATE USER’S MANUAL
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Table Of Contents
1.0 INTRODUCTION 4
1.1 Overvie 4
1.2 Highlights 5
1.3 Specifications 6
2.0 DESCRIPTION 7
2.1 Hard are Details 7
2.2 Board Layout 8
2.3 I/O Connections 9
2.4 J6 Consolidated 10
3.0 OPERATION 11
3.1 Embedded Control 11
3.1.1 Embedded Configuration 12
3.1.2 Embedded Programming 13
3.1.3 Embedded Program Example 14
3.2 PC Control 15
3.2.1 PC Programming 15
3.2.1.1 HyperTerminal 16
3.2.1.2 Virtual Instrument Panel 17
3.2.1.3 PC Programming Example 18
APPENDIX A. SERIAL COMMAND SET 19
APPENDIX B. SCHEMATIC 21
APPENDIX C. MECHANICAL DIMENSIONS 22

CHECK-MATE USER’S MANUAL
1. Introduction
1.1 Overvie
The Check-MATE has all the primary features you expect in a general purpose
data acquisition board, but for a fraction of the cost. It offers 8 single or 4 differ-
ential analog inputs ith 12-bit resolution (and a sampling rate of 100ksps).
Each of the analog inputs can be programmed for unipolar or bipolar operation.
Like ise, the analog output uses a 12-bit DAC (and operates in unipolar or bi-
polar modes). In addition, there are 8 digital input/output lines ( hich are inde-
pendently programmable).
The Check-MATE is made available in t o versions, a standard model or ith a
USB option. The standard model is designed for embedded applications and
provides a simple Oi-BUS interface for control by a external microcontroller.
With the USB option, many test solutions can be quickly built by connecting the
Check-MATE to a PC laptop or desktop, and then running our GUI soft are.
No external po er source is required, since po er is supplied through the USB
interface. Any either case, easy access to the hard are is made available
through a convenient collection of scre terminal connectors.
.
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12-BIT A/D
CONVERTER
INPUT
MUX
ANALOG
INPUTS
8 SE / 4 DIFF
ANALOG
OUTPUT
12-BIT D/A
CONVERTER
DIGITAL I/O
DIGITAL I/O
8-BITS
+15V
-15V
DC/DC
+5V
USB
INTERFACE
(OPTIONAL)
EMBEDDED
INTERFACE
CONTROL
INTERFACE
CHECK
CHECKCHECK
CHECK-
--
- MATE BLOCK DIAGRAM
MATE BLOCK DIAGRAMMATE BLOCK DIAGRAM
MATE BLOCK DIAGRAM

CHECK-MATE USER’S MANUAL
BENEFI T S APPL I C A T IONS FE A T UR E S
• A flexible, lo -cost alterna-
tive to expensive PC-based
DAQ cards
• Supports a ide-array of
mix-signal test applications
• Great for embedded solu-
tions - place inside mechani-
cal test fixtures, instrument
boxes or rack-mount enclo-
sures
• Burn-In
• Engineering
• Depot Repair
• Production Test
• QA/QC Quality Control
• OEM Test Instruments
• 8 SE /4 DIFF Analog Input
Channels, 12-bit Resolution,
100ksps sample rate
• 1-Channel, Digital-to-Analog
converter, 12-bit Resolution,
Unipolar/Bipolar modes
• 8 Digital Input/Output Bits,
Independently programmable
• USB or embedded control
interface
• Lo Cost
• Compact size, a 2.5” x 2.5”
PCB, ith four #4 mounting
holes in each corner (spacers
and hard are included)
1.2 Highlights
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CHECK-MATE USER’S MANUAL
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1.3 Specifications
Analog Inputs
Number of inputs 8 SE / 4 DIFF, programmable
Input Ranges 0-5V, 0-10V, ±5V, ±10V
Resolution / Sample
Rate
12-bit / 100ksps
Nonlinearity ±1LSB, no missing codes
Analog Output
Resolution 12-bit
Range 0-10V, ±10V
Current ±5mA max
Settling Time 4uS max to ±1/2 LSB
Relative Accuracy ±1 LSB
Digital I/O
Number of lines 8 bits, bidirectional
Logic Levels TTL, ±25mA (source/sink)
Embedded Oi-Bus interface
USB Interface Optional USB module
General
Po er Supply +5VDC±10%@3mA
Operating Temp 0-50ºC
Dimensions 2.5” x 2.5”
Input Control

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2. I/O Description
2.1 Hard are Details
Access to Check-MATE hard are is made possible through a convenient set of
scre terminal connections (J2 - J5), and J6 ( hich consolidates all signals into a
single 40-pin header).
The analog inputs (or channels) can be programmed for any combination of sin-
gle-ended or differential operation. The diagram belo sho s examples of vari-
ous configurations. You ill also note the polarity of connections related to differ-
ential operation can be transposed as ell. Each channel can be programmed
for anyone of 4 different range modes (i.e., 0-5V, ±5, 0-10V and ±10V). Keep in
mind, the circuit provides ±25V protection on each channel.
The single analog output channel can be programmed for either unipolar (0-10V),
or bipolar (±10V) operation.
The digital circuit includes 8 independent I/O bits. Each bit can be programmed
for either input or output. While in the input mode, a bit can be programmed to
provide a eak pull-up (~10K). Each bit provides a TTL logic level and can
source/sink 25mA.
External control of the Check-MATE can be provided by a embedded controller
(such as the Micro-MATE), or ith a PC. Embedded control is supported by J1
(Oi-BUS interface), hich is a 10-pin header that includes a 3- ire SPI-bus, chip
select logic, po er and ground. In PC applications, connector J1 is replaced ith
the USB--MATE. The USB-MATE contains a USB connector (for the PC), and
a dual set of 7-pin headers that mount to the Check-MATE. The USB-MATE is
designed to interpret a set of ASCII commands sent from the PC, and then per-
form various Check-MATE functions. For more information on the Check-MATE
command set, go to Appendix A. To support embedded applications, a complete
driver for the Check-MATE is provided in TES-MATE (or Test Executive Suite).
After po er is applied to the Check-MATE, the analog inputs are configured for
single-ended (0-5V range), the analog output is set to zero (range is 0-10V), and
the digital I/O circuit is cleared (all bits inputs).

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2.2 Board Layout
J1 - 10 Pin Interface
Provides access for
remote control via an
Embedded controller.
U B Interface
Connectors USB-1 and
USB-2 replaces J1,
and allo s connection
to the USB-MATE.
J4 - 9 Pin Terminal
Provides access to
the analog input.
J5 - 5 Pin Terminal
Provides access to SPI-
bus control signals.
J2 - 10 Pin Terminal
Provides access to
the digital I/O.
J4 - 2 Pin Terminal
- DAC output -
Pin 1, (+)
Pin 2, (-)
LED to indicate
active circuit.
Convenient GND
test point.

Pin Name Dir. Description
1 VCC
A regulated +5Vdc input .
Current should be limited
to roughly 100mA.
2 SCLK I
Part of a 3- ire SPI-Bus,
SCLK synchronizes the
serial data transfer for the
DIN and DOUT signals.
3 ADC_CS\ I
A TTL active-lo “input’
signal that provides a
chip-select for the ADC.
4 DIN I
Part of a 3- ire SPI-Bus,
DIN provides input com-
mand and control data for
the, ADC, DAC and DIO
circuits.
5 DAC_CS\ I
A TTL active-lo “input’
signal that provides a
chip-select for the DAC..
6 DOUT O
Part of a 3- ire SPI-Bus,
DOUT provides output
data from the ADC and
DIO circuits.
7 DIO_CS\ I
A TTL active-lo “input’
signal that provides a
chip-select for the DIO.
8 UNI/BIP\ I
A TTL active-lo “input’
signal that determines
unipolar (1), bipolar (0)
for the DAC.
9 DGND Digital Ground
10 BUSY\ O
A TTL active-lo “output’
signal that indicates the
ADC is busy converting a
measurement.
J1
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2.3 Connections
Pin Name Dir. Description
1 VCC +5V Po er
2 DIO-0 I/O Bit 0
3 DIO-1 I/O Bit 1
4 DIO-2 I/O Bit 2
5 DIO-3 I/O Bit 3
6 DIO-4 I/O Bit 4
7 DIO-5 I/O Bit 5
9 DIO-7 I/O Bit 7
10 DGND Digital Ground
8 DIO-6 I/O Bit 6
J2
J5
Pin Name Dir. Description
1 DAC-OUT O Voltage Output
2 AGND Analog Ground
Pin Name Dir. Description
1 AI-1 I Input CH 1
2 AI-2 I Input CH 2
3 AI-3 I Input CH 3
4 AI-4 I Input CH 4
5 AI-5 I Input CH 5
6 AI-6 I Input CH 6
7 AI-7 I Input CH 7
8 AI-8 I Input CH 8
9 AGND Analog Ground
J4
Pin Name Dir. Description
1 VCC +5V Po er
2 SCLK I
Part of a 3- ire SPI-Bus.
Use ith DIO for possible
external control
7 DIN I
Part of a 3- ire SPI-Bus.
Use ith DIO for possible
external control
9 DOUT O
Part of a 3- ire SPI-Bus.
Use ith DIO for possible
external control
10 DGND Digital Ground
J3

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J6
Pin Name Dir. Description
1 VCC +5V Po er
2 DIO-0 I/O Bit 0
3 DIO-1 I/O Bit 1
4 DIO-2 I/O Bit 2
5 DIO-3 I/O Bit 3
6 DIO-4 I/O Bit 4
7 DIO-5 I/O Bit 5
9 DIO-7 I/O Bit 7
10 DGND Digital Ground
8 DIO-6 I/O Bit 6
13 AI-1 I Input CH 1
14 AI-2 I Input CH 2
15 AI-3 I Input CH 3
16 AI-4 I Input CH 4
17 AI-5 I Input CH 5
18 AI-6 I Input CH 6
19 AI-7 I Input CH 7
20 AI-8 I Input CH 8
11 DAC-OUT O Voltage Output
12 AGND Analog Ground
2.4 J6 Consolidated