Measurement CIO-DAS16 User Manual
CIO-DAS16
CIO-DAS16/F
USER’S MANUAL
Revision 8
October, 2000
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HM CIO-DAS16.lwp
1 INSTALLATION
TABLE OF CONTENTS
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2 SIGNAL CONNECTION
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4 CIO-DAS16 CONTROL & DATA REGISTERS
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5 SPECIFICATIONS
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1
1 1.1 BASE ADDRESS
2 1.2 MODIFYING THE CIO-DAS16 FOR ODD ADDRESSES
2 1.3 DMA LEVEL SELECT
2 1.4 1/10 MHz XTAL JUMPER
2 1.5 8/16 CHANNEL SELECT
3 1.6 D/A CONVERTER REFERENCE JUMPER BLOCK
3 1.7 RANGE SWITCH SETTING
5
5 2.1 CONNECTOR DIAGRAM
6 2.2 ANALOG INPUTS
8 2.3 ANALOG OUTPUTS
8 2.4 DIGITAL OUTPUTS & INPUTS
93 ANALOG CONNECTIONS
9 3.1 ANALOG INPUTS
9 3.2 SINGLE-ENDED AND DIFFERENTIAL INPUTS
13 3.3 WIRING CONFIGURATIONS
18
19 4.1 INTRODUCTION
19 4.2 A/D DATA & CHANNEL REGISTERS
20 4.3 CHANNEL MUX SCAN LIMITS REGISTER
20 4.4 4-BIT DIGITAL I/O REGISTERS
21 4.5 D/A REGISTERS
22 4.6 STATUS REGISTER
23 4.7 DMA, INTERRUPT & TRIGGER CONTROL
23 4.8 PACER CLOCK CONTROL REGISTER
24 4.9 BASE + 11 - RESERVED REGISTER
24 4.10 PACER CLOCK DATA & CONTROL REGISTERS
25 4.11 24-LINE DIGITAL I/O REGISTERS
28
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1 INSTALLATION
Before you open your computer and install the board, install and run InstaCal™, the installation, calibration and test
utility included with your board. InstaCal™ will guide you through switch and jumper settings for your board. Detailed
information regarding these settings can be found below. Refer to the Software Installation manual for InstaCal™
installation instructions.
There are two versions of this board, the CIO-DAS16 and the CIO-DAS16/F. The only difference between the two is
maximum sampling rate for the A/D. They will both be referred to as the CIO-DAS16 except where this distinction
applies.
The CIO-DAS16 has one bank of switches, two single function switches and four jumper blocks which must be set before
installation of the board inside your computer.
1.1 BASE ADDRESS
After a base address is chosen, a diagram of the switch setting is drawn on the PC screen. Set the switches on your base
address switch as shown on Figure 1-1. Unless there is already a board in your system which uses address 300 hex (768
decimal) then you can leave the switches as they are set at the factory.
In the diagram, the CIO-DAS16 is set for base address 300h. That means the
DAS-16 compatible section of the board is at 300h and the PIO-12 compatible
section of the board is at 310h (784 Decimal).
When the 4 addresses of the 8255 digital I/O (PIO-12) are in use, the
CIO-DAS16 occupies 20 consecutive addresses and is addressable on 32 address
boundaries. Address boundaries of 32 are 300h, 320h, 340h, 360h, etc.
Figure 1-1. Base Address Switches
Because the MetraByte DAS-16 occupies only 16 addresses, it is addressable at 300h, 310h, 320h, 330h etc. If you have
written software that assumes the DAS-16 base address is on a 16 address boundary and it is too much trouble to change
the address in software, the CIO-DAS16 can be made to occupy only 16 addresses and address on 16 address boundaries.
If you want to address the CIO-DAS16 on a 16 boundary address, such as 310h, 330h, 350h etc., you will not be able to
use the additional 24 digital I/O lines on the rear connector.
1.2 MODIFYING THE CIO-DAS16 FOR COMPATIBLE ADDRESSES
There are two jumpers on the CIO-DAS16, J3 and J4, which disable or enable the 8255. The jumpers must be configured
as a pair, according to either the (A) or (B) configuration in Figure 1-2.
J3J4
(A)CIO-DAS16 POSITION
PIO-12 is active at Base Address + 16
Board will address at 300H, 320H, 340H, etc.
Board will address at 300H, 310H, 320H, etc.
J4
(B) DAS 16 POSITION
PIO-12 is not active at any address.
J3
CIO-DAS16 PIO-12 KNOCK OUT JUMPERS - The CIO-DAS16 is shipped in the (A)
configuration. It should be left this way unless you want to use odd addressess,
such as 310H, 330H, 350H, etc. In the (B) configuration, the 24 digital lines of
the 8255 are not usable.
Figure 1-2. Odd Address Jumpers
1
1.3 DMA LEVEL SELECT
What kind of computer are you installing the board in? If it is an old XT then there are only two DMA levels available
and level 3 is probably used by the hard disk controller in your XT computer. Set the
DMA level switch to the level 1 position (Figure 1-3).
If you have an AT or 386 type computer the hard disk controller is not at level 1 or 3
so either level may be used.
There are other boards that use DMA levels. Some network boards and some
IEEE-488 interface boards do also. If you have other boards in your computer with
DMA level switches on them, they must have a different level setting.
Figure 1-3. DMA Level Select Switch
1.4 1/10 MHZ XTAL JUMPER
The 1/10 MHz XTAL jumper selects the frequency of the source applied to the
on-board pacer. This pacer is used to pace the A/D start conversion trigger.
This jumper is on the board because the original DAS-16, designed in 1984, had
a 1 MHz crystal. When MetraByte redesigned the DAS-16 and added the faster
10 MHz crystal, a jumper was provided to maintain compatibility with older
software. The CIO-DAS16 has the jumper because the DAS-16 has the jumper
and some software needs the jumper to be in the 1 MHz position and some
software requires the 10 MHz position.
Figure 1-4. 1 or 10 MHz Xtal Jumper
The CIO-DAS16 is shipped with the jumper in the 1 MHz position.
Some older 3rd party software programs require that the jumper be in the 1 MHz position. Please refer to the software
program user's manual for guidance. Other programs, such as Labtech Notebook, have a 1 or 10 MHz choice in the
set-up menu.
1.5 8/16 CHANNEL SELECT
The analog inputs of the CIO-DAS16 may be configured as 8 differential or 16
single-ended. Using single-ended inputs means you have more separate analog
input channels available to connect signals. Using differential inputs allows up to
10 volts of common mode (ground loop) rejection and can be more noise immune.
The CIO-DAS16 comes from the factory configured for 8 differential inputs so the
8/16 switch is in the position shown here. Set it for the type and number of inputs
you desire.
Figure 1-5. 8 /16 Channel Select Switch
2
1.6 D/A CONVERTER REFERENCE JUMPER BLOCK
There is a jumper block with 10 pins (2 rows of 5 each) located top center on the board. This block allows you to use the
on-board precision voltage reference or an external voltage to provide reference to either or both of the digital-to-analog
converters.
If you choose to use the on-board voltage reference rather than an external voltage, two D/A reference input pins, 10 and
26, on the 37-pin connector are not needed as reference inputs.
The 'S' jumper in this block is used to place a synchronizing signal on pin 26 so that the CIO-SSH16 external accessory
Simultaneous Sample & Hold board can be used.
If the on-board D/A reference is used, the jumpers are set in the I1 and I0
positions (Figure 1-6). The board is configured this way at the factory. The
SS&H output is not connected. If an external reference is desired, move the
blocks to X0 and X1. If using a CIO-SSH16 board, leave the blocks on I0
and I1 and place a block on SS&H. To avoid possible damage in the event
of a bad connection, do not install jumper S unless you intend to connect a
CIO-SSH16 board. There is a spare shorting block on one of the 'S' pins.
Figure 1-6. Ref. Volt and SS&H Jumpers
D/A 1
EXTERNAL &
INTERNAL
X I1 S I0 X
D/A 0
INTERNAL &
EXTERNAL
1.7 RANGE SWITCH SETTING
A bank of six dip switches accessible through the CIO-DAS16 connector bracket control the UNIPOLAR/BIPOLAR
analog input range (Figure 1-7).
SW #
UNIPOLAR
LEFT
NO USER GAIN
These switches control the analog input range values of all channels. You can use Table 1-1 and Figure 1-7, or use the
Cal program to determine the correct positions of switches S1 through S6 for the range you desire.
Insta
.
6
5
4
3
2
1
The factory setting of +/- 5V
BIPOLAR - SW 6 ONLY
SW 2 - 4
SELECT THE RANGE
USER GAIN SELECTED
shown.
Figure 1-7. Range Select Switches
SEE TABLE 1-1
3
Table 1-1. Range Select Switch Positions
GAINS5S4S3S2S1
In the above table R = right and L = left.
BIPOLAR
S6=RIGHT
S6=LEFT
RESOLUTIONUNIPOLAR
4.88mV / bitN/A+/- 10V0.5LLLLL
2.44mV / bit0 to 10V+/- 5V1RLLLL
1.22mV / bit0 to 5V+/- 2.5V2RRLLL
0.488mV / bit0 to 2 V+/- 1V5RLRLL
0.244mV / bit0 to 1V+/- 0.5V10RLLRL
SEE EQUATION0.5 < USER < 20LLLLR
S6, the top switch, controls a relay that switches the range between unipolar and bipolar.
Set the switches as desired or leave them at the factory setting of +/- 5 volts.
It is not necessary to turn off the PC power or disconnect signals when changing these switch settings.
4
2 SIGNAL CONNECTION
2.1 CONNECTOR DIAGRAM
The CIO-DAS16 analog connector is a 37-pin, D-type connector accessible from the rear of the PC through the expansion
backplate (Figure 2-1). The signals available are identical to the DAS-16, or optionally, an additional signal, SS&H
OUT, may be accessed at pin 26.
UNIPOLAR
RR
LR
LR LL
LLRL
LL L
GAIN = 0.5 2 5 10
CH0 LOW/CH8 HIGH 18
CH1 LOW/CH9 HIGH 17
CH2 LOW/CH10 HIGH 16
CH3 LOW/CH11 HIGH 15
CH4 LOW/CH12 HIGH 14
CH5 LOW/CH13 HIGH 13
CH6 LOW/CH14 HIGH 12
CH7 LOW/CH15 HIGH 11
LLGND 19
D/A 0 REF 10
D/A 0 OUT 9
-5V REF 8
GND 7
DIG. IN 1 6
DIG. IN 3 5
DIG. OUT 1 4
DIG. OUT 3 3
CTR 0 OUT 2
+5V PC BUS 1
R
BIPOLAR
R
GAIN = 1
L
+/- 5V RANGE
L
L
USER GAIN RESISTOR
37 CH0 HIGH
36 CH1 HIGH
35 CH2 HIGH
34 CH3 HIGH
33 CH4 HIGH
32 CH5 HIGH
31 CH6 HIGH
30 CH7 HIGH
29 LLGND
28 LLGND
27 D/A 1 OUT
26 D/A 1 REF/SS&H OUT
25 DIG. IN 0/TRIGGER
24 DIG. IN 2/CTR0 GATE
23 DIG. OUT 0
22 DIG. OUT 2
21 CTR 0 CLOCK IN
20 CTR 2 OUT
CIO-DAS16 ANALOG CONNECTOR - The CIO-DAS16
analog connector can be accessed from the rear of
the computer through the expansion backplate.
Figure 2-1. Analog Connector
If frequent changes to signal connections or signal conditioning is required, please refer to the information on one of the
following:
y
CIO-TERMINAL screw terminal board
y
CIO-EXP16, 16-channel analog multiplexer
y
CIO-SSH16 16-channel simultaneous sample & hold board
y
ISO-RACK16, 16-module 5B isolation module interface rack
The CIO-DAS16 digital connector is identical to the CIO-DIO24 connector except for the −12V and +12V power signals
and interrupt input brought out on the CIO-DIO24. These are no-connect pins on the CIO-DAS16.
The digital connector is mounted at the rear of the CIO-DAS16 and will accept a 37-pin, D-type female connector such as
those on the C73FF-2, two-foot cable with connectors.
5
A BP-37 will bring the signals to a backplate with a 37 pin male connector
g1g
mounted in it.
A standard C37FF-2 may be run alongside the analog connector through the
gap in the expansion slot backplate, or may be connected to the BP-37.
2.2 ANALOG INPUTS
Analog inputs to the CIO-DAS16 can be connected in three different
configurations:
y
Single-Ended
y
Floating Differential
y
Differential.
WARNING - PLEASE READ
Measure the voltage between the ground signal at the signal source and the PC. Using a voltmeter, place
the red probe on the PC ground and the black probe on the signal ground. If there is more than 10 volts
(AC or DC), do not connect the CIO-DAS16 to this signal source because you will not be able to make
any reading. If more than 30 volts, DO NOT connect this signal to the CIO-DAS16 because it will
damage the board and possibly the computer. Voltages over 24V can be hazardous. Use great care
when measuring voltages.
19
GND
+5V
GND
NC
GND
NC
GND
NC
GND
PORT B 0
PORT B 1
PORT B 2
PORT B 3
PORT B 4
PORT B 5
PORT B 6
PORT B 7
NC
NC
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
PORT A 0
PORT A 1
PORT A 2
PORT A 3
PORT A 4
PORT A 5
PORT A 6
PORT A 7
PORT C 0
PORT C 1
PORT C 2
PORT C 3
PORT C 4
PORT C 5
PORT C 6
PORT C 7
GND
+5V
CIO-DAS16 DIGITAL CONNECTOR - The connector
is mounted at the rear of the CIO-DAS 16.
Figure 2-2. Digital Connector
SINGLE-ENDED
A single-ended input has two wires connected to the CIO-DAS16; a channel high (CH# HI) and a Low Level Ground
(LLGND). The LLGND signal must be the same ground the PC is on. The CH# HI is the voltage signal source.
DIFFERENTIAL
Vs+Vcm
AMP
+
-
+
-
2
TO A/D
GND
S
I
G
N
A
L
V+
Vs
37
36
35
34
LL GND
CH 0 HI
HI
G
19
18
17
16
15
SIGNAL ENDED INPUT - A channel high (CH 0 HI) and a low level ground
(LLGND) are connected to the CIO-DAS16.
Figure 2-3. Single-Ended Input Configuration
6
FLOATING DIFFERENTIAL
A floating differential input is two wires from the signal source and a
10K ground reference resistor installed at the CIO-DAS16 input. The
two signals from the signal source are Signal High (CH# HI) and
Signal Low (CH# LO) (Figure 2-4).
The reference resistor is connected between the CIO-DAS16 CH# LO
and LLGND pins.
A floating differential hookup is useful when the signal source is
floating with respect to ground, such as a battery, 4-20 mA transmitter
or the lead lengths are long or subject to EMI.
The floating differential input will reject up to 10V of EMI.
WARNING!
Verify that the signal source is floating. Check it with a voltmeter before risking the CIO-DAS16 and PC!
DIFFERENTIAL
10K OHM
-
+
BATTERY
CIO-DAS16 FLOATING DIFFERENTIAL - The two
signals from the signal source are Signal High
(CH 0 HI) and Signal Low (CH 0 LO).
LL GND
19
CH 0 HI
37
CH 0 LO
18
36
17
35
16
34
15
AMP
+
8
16
TO A/D
-
Figure 2-4. Floating Differential Input
DIFFERENTIAL
A differential signal has three wires from the signal source. The signals are Signal High (CH# HI), Signal Low (CH# LO)
and Signal Ground (LLGND) (Figure 2-5).
A differential connection allows you to connect the CIO-DAS16 to a signal source with a ground that is different from
the PC ground, but less than 10V difference, and still make a true measurement of the signal between CH# HI and CH#
LO.
DIFFERENTIAL
AMP
37
36
35
34
LL GND
CH 0 HI
CH 0 LO
8
19
V-
V+
18
17
GND
16
15
CIO-DAS16 DIFFERENTIAL - The signals are Signal High (CH 0 HI), Signal Low
(CH 0 LO), and Signal Ground (LLGND).
+
TO A/D
-
16
Figure 2-5. Differential Input
EXAMPLE:
A laboratory instrument with its own wall plug. There are sometimes voltages in wall GND between outlets.
7
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