Download Sensory Science 7405 User's Manual

INSTRUCTION MANUAL
Sensoray Model 7405
STDbus Analog Output Card
01/10/2000
Sensoray Co., Inc.
7313 SW Tech Center Dr., Tigard, Oregon 97223
voice: 503.684.8005, fax: 503.684.8164, e-mail: [email protected]
www.sensoray.com
M
A
N
U
A
L
4
2
6
Limited Warranty
Sensoray Company, Incorporated (Sensoray) warrants the
model 7405 hardware to be free from defects in material and
workmanship and perform to applicable published Sensoray
specifications for two years from the date of shipment to
purchaser. Sensoray will, at its option, repair or replace
equipment that proves to be defective during the warranty
period. This warranty includes parts and labor.
The warranty provided herein does not cover equipment
subjected to abuse, misuse, accident, alteration, neglect, or
unauthorized repair or installation. Sensoray shall have the
right of final determination as to the existence and cause of
defect.
As for items repaired or replaced under warranty, the
warranty shall continue in effect for the remainder of the
original warranty period, or for ninety days following date of
shipment by Sensoray of the repaired or replaced part,
whichever period is longer.
A Return Material Authorization (RMA) number must be
obtained from the factory and clearly marked on the outside
of the package before any equipment will be accepted for
warranty work. Sensoray will pay the shipping costs of
returning to the owner parts which are covered by warranty.
Sensoray believes that the information in this manual is
accurate. The document has been carefully reviewed for
technical accuracy. In the event that technical or
typographical errors exist, Sensoray reserves the right to
make changes to subsequent editions of this document
without prior notice to holders of this edition. The reader
should consult Sensoray if errors are suspected. In no event
shall Sensoray be liable for any damages arising out of or
related to this document or the information contained in it.
EXCEPT AS SPECIFIED HEREIN, SENSORAY MAKES
NO WARRANTIES, EXPRESS OR IMPLIED, AND
SPECIFICALLY DISCLAIMS ANY WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. CUSTOMER’S RIGHT TO
RECOVER DAMAGES CAUSED BY FAULT OR
NEGLIGENCE ON THE PART OF SENSORAY SHALL
BE LIMITED TO THE AMOUNT THERETOFORE PAID
BY THE CUSTOMER. SENSORAY WILL NOT BE
LIABLE FOR DAMAGES RESULTING FROM LOSS OF
DATA, PROFITS, USE OF PRODUCTS, OR
INCIDENTAL OR CONSEQUENTIAL DAMAGES,
EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
1.
Do not remove the 7405 from its protective antistatic
bag until you are ready to install it in your computer.
2.
Handle the 7405 only at grounded, ESD protected
stations.
3.
Always turn off the computer before installing or
removing the 7405 board.
All brand, product and company names are trademarks or
registered trademarks of their respective owners.
Introduction
The Model 7405 board interfaces eight analog output
channels directly to the STDbus. Each channel may be
independently configured for either voltage or current
output. The voltage or current output from each channel is a
linear function of that channel’s applied digital value.
When programmed for voltage output, a channel will
generate a voltage between -10 and +10 volts. Careful
attention to circuit design on the Model 7405 makes this
voltage range possible, even when powering the STDbus
from ±12 volt power supplies.
Upon board reset, all channels are automatically initialized
to their appropriate zero-output conditions. Voltage-mode
channels default to zero volts out, and current-mode
channels reset to four milliamps out.
A 40-pin flat cable connector is provided for making
connections to the analog output channels. The connector
may be wired to an optional Sensoray Model 7409TB or
7409TC screw termination board, or to a termination system
customized for the target application.
Two STDbus I/O addresses are occupied by the Model 7405.
These two consecutive addresses may be mapped anywhere
in the STDbus eight-bit I/O address space.
Specifications
Specification
Input power
(excluding output drive)
Operating temperature
D/A resolution
Channel update rate
Output linearity error
Analog output modes
Special Handling Instructions
The Model 7405 board contains CMOS circuitry that is
sensitive to Electrostatic Discharge (ESD). Special care
should be taken in handling, transporting, and installing the
7405 to prevent ESD damage to the board. In particular:
Sensoray Model 7405 Instruction Manual — Page 2
Value
±12.0 to ±15VDC, 80mA max.
+5.0VDC, 100mA max.
-25°C to +85°C
12 bits
20KHz, min. (single channel rate)
0.03%, max.
Voltage out: ±10V
Current out: 4 to 20 mA
Hardware Configuration
The Model 7405 requires the installation of programming
shunts to select various options such as I/O port addresses
and channel operating modes. This section describes these
configuration options.
After configuring the option shunts, the Model 7405 may be
installed in your STDbus backplane and programmed as
explained in the Programming section of this manual.
Both board address and channel output types are established
by installing programming shunts at various locations on the
board. In all of the following discussions of shunt
programming, I denotes an installed programming shunt and
R indicates that no shunt is installed:
Symbol
I
R
Meaning
Shunt installed
Shunt removed
Defaults
All option jumpers are set to a standard default configuration
at the factory. If the default configuration is consistent with
your application, you may be able to use the board without
having to reconfigure any jumpers.
Attribute
I/O base address
I/O Space
Analog channel mode
Default
0xB2
Primary
Voltage out
I/O Space
E8
E7
E6
E5
E4
Val
E3
E2
E1
Val
I
I
I
I
I
I
I
I
R
R
R
R
R
R
R
R
I
I
I
I
R
R
R
R
I
I
I
I
R
R
R
R
I
I
R
R
I
I
R
R
I
I
R
R
I
I
R
R
I
R
I
R
I
R
I
R
I
R
I
R
I
R
I
R
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
I
I
I
I
R
R
R
R
I
I
R
R
I
I
R
R
I
R
I
R
I
R
I
R
0
2
4
6
8
A
C
E
Channel Mode
Each channel has three mode control option jumpers, used to
select either voltage or current output mode. A channel’s
mode control jumpers work as a set. For any given channel,
either all jumpers should be installed or all should be
removed. A jumper set should be installed to configure the
associated channel for current output. Conversely, the
jumper set should be removed to configure the channel for
voltage output.
Channel
Two separate I/O spaces exist on the STDbus: primary and
expanded. Option jumper E8 selects which I/O space the
Model 7405 board will reside in. E8 is factory set to map the
board into primary space.
I
R
most significant address nibble, and the table on the right for
the least significant address nibble.
I/O Address Space
Primary
Expanded
I/O Port Mapping
The Model 7405 occupies two consecutive 8-bit addresses in
the selected STDbus I/O address space. These ports may be
mapped to any even address from 0x00 to 0xFE. Jumpers
are factory installed to locate the board at ports 0xB2 and
0xB3.
The following tables show the jumper configurations for all
possible board addresses. Use the table on the left for the
0
1
2
3
4
5
6
7
Jumper Set
A0
A1
A2
A3
A4
A5
A6
A7
B0
B1
B2
B3
B4
B5
B6
B7
D0
D1
D2
D3
D4
D5
D6
D7
For example, jumpers A3, B3 and D3 must all be installed to
configure channel 3 for the 4-20mA current output mode.
Jumpers A7, B7 and D7 must all be removed to configure
channel 7 for the ±10 volt output mode.
Programming
Programming of the Model 7405 is accomplished by means
of three STDbus interface registers. One register is used to
let the host processor know when new data may be sent to
the board. The other two registers receive a combination of
channel number and analog channel data from the host.
Sensoray Model 7405 Instruction Manual — Page 3
Programming Model
Data Registers
The Model 7405 board occupies two contiguous I/O ports in
the STDbus I/O space. Both ports may be written to, and the
base port has a read function as well.
Analog channel data may be written into the A and B
registers after ensuring that the status register handshake bits
are both reset to logic 0.
B Register
Function
I/O
Address
Base Address + 0
Base Address + 1
D7 D6 D5 D4 D3 D2 D1 D0
Read
Write
Status Register
(not used)
A Register
B Register
Note that the status register and A register share the same I/O
port address. This is possible because the status register is
read only while the A register is write only.
Status Register
The status register provides the host with a means for
monitoring Model 7405 handshake status. When the host
reads from the status port, a byte with the following form is
returned:
D6
BUSY BUSY
D7 D6 D5 D4 D3 D2 D1 D0
0
Analog output data and channel number is written to the A
and B registers, while the status register is used by the host
processor for handshake control.
D7
A Register
D5
D4
D3
D2
D1
D0
X
X
X
X
X
X
Not Used
Channel can be written to
when these are both zero
The status register contains two BUSY bits that are used to
handshake data onto the Model 7405 board. When both bits
are reset to logic 0, the board is ready to accept new data.
The remaining six bits are not used and should be ignored.
Prior to writing new data to the board, the host must read and
test the two BUSY bits. The host should write data to the
board only when both BUSY bits contain logic 0.
Although this handshake rule is simple, failure to observe it
will most likely result in communication errors.
Channel
Analog Output Data
First the low data byte is written into the A register. Then
the B register is loaded with the high data nibble and channel
number.
Data Format
The analog channel data format is a function of the selected
output mode. Voltage mode employs a format different from
that of current mode. This table illustrates the relationship
between channel data value and signal output:
Data Value
(Hexadecimal)
000
001
002
...
7FF
800
801
...
FFE
FFF
Voltage Mode
Output (V)
-10.000
-9.9951
-9.9902
Current Mode
Output (mA)
4.0000
4.0039
4.0078
-0.0049
0.0000
+0.0049
11.996
12.000
12.004
+9.9902
+9.9951
19.996
20.000
Connections
All output loads are connected to the Model 7405 through
40-pin flat cable connector P1. Optionally, loads may be
connected to the Model 7405TB screw termination board,
which in turn connects to P1 by means of flat ribbon cable.
Each channel has four dedicated pins on connector P1. Two
of the pins are used only in the voltage output mode, and the
other two only in current output mode. In addition, ground is
supplied on connector P1 pin 38 for use as a cable shield.
A channel circuit may be wired in one of two ways,
depending on the selected output mode (voltage versus
current). The following table specifies the proper connector
P1 pins to be used:
Sensoray Model 7405 Instruction Manual — Page 4
Chan
0
1
2
3
4
5
6
7
5.
Set analog channel 0 output to -10 volts by
programming the channel data value to 000 hex.
Voltage
Mode Pin
Current
Mode Pin
6.
Adjust the gain trimpot until the voltmeter reads -10
volts.
+
-
+
-
7.
2
6
10
14
18
22
26
30
4
8
12
16
20
24
28
32
1
5
9
13
17
21
25
29
3
7
11
15
19
23
27
31
Configure the output modes of all eight channels as
required by your application.
8.
For each voltage channel, connect the meter to the
channel voltage output pins on connector P1. Set the
output to 0 volts by programming the channel data value
to 800 hex. Adjust the channel offset trimpot until the
meter displays 0 volts.
9.
For each current channel, connect a precision
milliammeter across the channel’s current output pins
on connector P1. Set the output to 4 mA by
programming the channel data value to 000 hex. Adjust
the channel offset trimpot until the meter displays 4 mA.
Channel connections should be made as illustrated in the
following diagram, regardless of the selected channel output
mode.
Board Layout
+pin
P1
load
A0 B0
–pin
CH0
gnd
CH1
A1 B1
A2 B2
CH2
A3 B3
Calibration
CH3
Although the 7405 analog section is factory calibrated at
Sensoray, you may find that a periodic calibration is in order
to compensate for circuit drift over time. The board contains
nine trimpots in all, one offset trim for each channel and one
gain trim that is common to all channels.
CH4
The general strategy for board calibration is to first adjust the
gain trimpot, followed by the individual channel offset
adjustments. It is important that the final offset adjustments
be performed after configuring the channels for their target
operating modes.
CH7
A4 B4
A5 B5
CH5
A6 B6
CH6
A7 B7
GAIN
D7 654321 0
E8 1 2 3 4 5 6 7
Procedure
1.
Configure analog channel 0 for voltage output mode by
removing programming shunts at A0, B0 and D0.
2.
Connect a precision voltmeter to the channel 0 voltage
outputs. Connect the positive lead to P1 pin 2, and the
negative lead to P1 pin 4.
3.
Set analog channel 0 output to 0 volts by programming
the channel data value to 800 hex.
4.
Adjust the channel 0 offset trimpot until the voltmeter
reads 0 volts.
Sensoray Model 7405 Instruction Manual — Page 5
Sample Drivers
These sample driver functions, written in C/C++, assume that all channels are configured for the voltage output mode. With
minor modification, these drivers can be made to work with channels that are set up for current output mode operation.
#define BUSY 0xC0
// Handshake status bit mask
typedef unsigned char UCHAR;
UCHAR InByte( UCHAR address )
{
// INSERT CODE HERE THAT WILL RETURN A VALUE FROM AN 8-BIT I/O PORT
}
void OutByte( UCHAR address, UCHAR value )
{
// INSERT CODE HERE THAT WILL WRITE A VALUE TO AN 8-BIT I/O PORT
}
void WriteVoltage( UCHAR baseport, UCHAR channel, double volts )
{
// Limit voltage to legal values.
double voltage = (volts > 9.995) ? 9.995 : ( (volts < -10.0) ? -10.0 : volts );
// Convert voltage value to binary value suitable for DAC.
short value = (short)( 2048 + voltage * 204.8 );
// Wait until Model 7405 board is ready to accept data.
do {} while ( InByte(baseport) & BUSY );
// Write binary value to Model 7405 board.
OutByte( baseport, value & 0xFF );
OutByte( baseport + 1, ((channel << 4) & 0x70) | ((value >> 8) & 0x0F) );
}
Sensoray Model 7405 Instruction Manual — Page 6
D
C
B
A
*
P2
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
D0
D1
D2
D3
D4
D5
D6
D7
VBB1
VBB2
+5V
+5V
DGND
DGND
AGND
AGND
+12V
-12V
WR
RD
IORQ
MEMRQ
IOEXP
MEMEX
RFSH
MSYNC
STAT1
STAT0
BUSAK
BUSRQ
INTAK
INTRQ
WAITRQ
NMIRQ
SYSRESET
PBRESET
CLOCK
CNTRL
PCO
PCI
E8
E1
E2
E3
E4
E5
E6
E7
BOARD
ADDRESS
SELECT
JUMPERS
1
53
54
55
56
+5V
+12V
-12V
AB0
AB1
AB2
AB3
AB4
AB5
AB6
AB7
29
27
25
23
21
19
17
15
30
28
26
24
22
20
18
16
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
+5V
13
11
9
7
14
12
10
8
5
6
1
2
3
4
1
3
4
7
8
13
14
17
18
1
11
3
4
7
8
13
14
17
18
1
11
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
GHI*
WHI*
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
GLO*
WLO*
1
IORQ*
G
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
P0
P1
P2
P3
P4
P5
P6
P7
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
2
74HCT374
OC
CLK
D0
D1
D2
D3
D4
D5
D6
D7
U23
74HCT374
OC
CLK
D0
D1
D2
D3
D4
D5
D6
D7
U26
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
3300pF
C47
CLK
1K
R77
ARST*
C58
2
5
6
9
12
15
16
19
2
5
6
9
12
15
16
19
C57
19
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
XA0
XA1
XA2
DB7
DB6
GRAM*
+5V
BDSEL*
P=Q
U27
74HCT688
C61
SYSRD*
SYSWR*
AB0
3
5
7
9
12
14
16
18
2
4
6
8
11
13
15
17
10K-SIP
RN2
2
IOEXP
AB1
AB2
AB3
AB4
AB5
AB6
AB7
1
2
3
4
5
6
7
8
9
10
11
13
3
5
7
9
6
4
5
C14
74HC368
2Y1
2Y2
1Y1
1Y2
1Y3
1Y4
U13
3
3
GRAM*
WRAM*
1G
2G
2A1
2A2
15
14
13
12
11
10
9
7
A0
A1
A2
A3
1
15
12
14
2
4
6
10
C34
C26
C59
1A1
1A2
1A3
1A4
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
C33
C25
C55
74HCT138
G1
G2A
G2B
A
B
C
U17
0.1uF
C13
1
2
3
C6
C52
0.1uF
C5
C54
C35
C27
C51
18
20
21
8
7
6
5
4
3
2
1
23
22
19
CE
OE
WE
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
GSTAT*
BUSY*
LBUSY*
S3
WHI*
WLO*
GSTAT*
C15
C7
C50
D0
D1
D2
D3
D4
D5
D6
D7
C36
C28
C60
U21
8416
C16
C8
C56
9
10
11
13
14
15
16
17
C49
C42
C53
4
4
D0
D1
D2
D3
D4
D5
D6
D7
LBUSY*
C41
C43
C48
D0
D1
D2
D3
D4
D5
D6
D7
+5V
3
5
7
9
12
14
16
18
U25B
S3
8
11
74HC244
2Y4
2Y3
2Y2
2Y1
1Y4
1Y3
1Y2
1Y1
2A4
2A3
2A2
2A1
1A4
1A3
1A2
1A1
2G
1G
74HC163
5
17
15
13
11
8
6
4
2
19
1
14
13
12
11
15
3
74HC00
74HC00
U25A
5
4
5
MEM ADRS REG
U22
3
A
QA
4
B
QB
5
C
QC
6
D
QD
RCO
7
ENP
10
ENT
2
CLK
9
LOAD
1
CLR
U25C
74HC00
U25D
74HC00
2
1
ZERO REGISTER
U20
10
9
13
12
GLO*
C62
10uF,20V
-12V
10uF,20V
+12V
10uF,20V
CLK
WMAR*
SRST*
+5V
XA0
XA1
XA2
C64
C63
A0
A1
A2
A3
A0
D0
D1
D2
D3
+5V
T0
T1
T2
T3
T4
T5
T6
T7
LBUSY
RCO
A1
A2
A3
A0
S0*
9
1
3
4
6
11
13
14
11
10
9
7
4
3
2
1
15
14
13
12
CLK
CLK
S0
S1
S2
S3
ARST*
SRST*
BUSY*
6
BUSY
Q1
Q2
Q3
Q4
Q5
Q6
6
74HC174
CLK
CLR
D1
D2
D3
D4
D5
D6
U16
74HC151
A
B
C
G
D0
D1
D2
D3
D4
D5
D6
D7
U19
T[0..7]
A[0..3]
Y
W
U28
5
6
2
5
7
10
12
15
I1/CLK
I2
I3
I4
I5
I6
I7
I8
I9
I10
I11
I12
GZERO*
1
2
3
4
5
6
7
8
9
10
11
13
D8
D9
D10
D11
S0
S1
S2
S3
D1
D2
D3
D4
D5
D6
D7
D8
O1
O2
O3
O4
O5
O6
O7
O8
O9
O10
1
2
3
4
5
6
7
8
9
10
D[0..11]
10K-SIP
RN1
SRST*
BUSY
WSTATE*
SAMPLE*
GZERO*
MARCNT
WMAR*
WRAM*
GLO*
GHI*
+5V
7
T0
T1
T2
T3
T4
T5
T6
T7
T0
T1
T2
T3
T4
T5
T6
T7
INSTALL
FOR
CURRENT
OUTPUT
Monday, December 16, 1996
Date:
7
Document Number
0500067S
MODEL 7405 STD 8-CHANNEL DAC
Size
B
Title
SENSORAY COMPANY, INCORPORATED
23
22
21
20
19
18
17
16
15
14
STATE
REGISTER
14
13
12
11
15
22V10
QA
QB
QC
QD
RCO
74HC163
ENP
ENT
CLK
LOAD
CLR
A
B
C
D
U24
WSTATE*
7
10
2
9
1
3
4
5
6
6
Sheet
A[1..3]
-12V
+12V
SAMPLE*
1
8
of
500067S2
AGND
D[0..11]
DGND
-12V
+12V
A[1..3]
2
SAMPLE*
SHEET 2
0400067
RevB
1
EJECTOR
1
8
Rev
B
D
C
B
A
D
C
B
A
DGND
D[0..11]
1
GAIN
-12V
-12V
AGND
+12V
-
+
R66
GAIN
500-POT
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
12
15
16
14
13
11
10
9
8
7
6
5
4
3
2
10.0K,1%
+12V
2
AD7845
DGND
WR
CS
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
U18
3
5
AGND
VOUT
VREF
VSS
VDD
RFB
RC
RB
RA
U11A
MC34082
1
C45
0.1uF
24
23
22
21
-12V
VREF
Q10
MPS6601
18
1
17
19
20
VREF*
-12V
+12V
VREF
Q9
2N4403
VREF*
R79
10.0K,1%
C46
0.1uF
7
-12V
-
+
+12V
VOLTAGE REFERENCE
VI0
VI1
VI2
VI3
VI4
VI5
VI6
VI7
VI7
VI6
VI5
VI4
VI3
VI2
VI1
VI0
R78
10.0K,1%
6
5
R70
R69
R72
R71
R73
R76
R74
R75
R64
R32
R63
R31
R62
R30
R61
R29
10.0K,0.1%
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
VR7
VR6
VR5
VR4
VR3
VR2
VR1
VR0
MC34082
U11B
CH7
CH6
CH5
CH4
CH3
CH2
CH1
CH0
6
7
4
2
5
1
12
15
14
13
2
U14
3.3K
X7
X6
X5
X4
X3
X2
X1
X0
8
A7
A6
A5
A4
A3
A2
A1
A0
U9B
MC34082
LM336
R80
SMP-08
X
C
B
A
E
VEE
VDD
+12V
3
9
10
11
6
7
16
SAMPLE/HOLD
U12
1
GND
-12V
U9A
3.750V
MC34082
2
3
R65
10.0K,1%
D[0..11]
A3
A2
A1
+12V
A[1..3]
A[1..3]
SAMPLE*
VREF*
VREF
R68
10.2K,0.1%
C44
0.1uF
VRJUNCT
+12V
+
R67
3.40K,0.1%
2
INSTALL FOR
CURRENT OUTPUT
-
1
+
VREF
3
3
VREF*
C17
0.01uF
-
+
-
R4
R8
1.00K,0.1%
-
+
-
+
4
Q4
MPS6601
7
C4
0.01uF
C12
0.01uF
PH6
PL6
+12V
V6
PH3
PL3
+12V
V3
PL0
R12
100
B6
+12V
V0
PH0
R42
100
B3
Q6
MPS6601
7
7
R9
100
B0
Q1
MPS6601
C22
0.01uF
C30
0.01uF
C1
0.01uF
MC34082
6
5
20.0,0.1%
U4B
3.83K,0.1%
-12V
19.6K,0.1%
C20
0.01uF
6
5
R16
MC34082
1
-
+
MC34082
U6B
R46
20.0,0.1%
+12V
R34
R24
6.81K,0.1%
R20
2
-12V
3.83K,0.1%
R38
1.00K,0.1%
+
1
6
5
C9
0.01uF
MC34082
MC34082
+12V
4
R13
U1B
19.6K,0.1%
C38
0.01uF
3
-12V
R1
20.0,0.1%
R54
6.81K,0.1%
R50
2
3
1
MC34082
19.6K,0.1%
R5
1.00K,0.1%
U4A
10K-POT
CH6
VREF
R28
1M
VI6
VREF*
-
+
R21
6.81K,0.1%
U6A
10K-POT
CH3
VREF
R58
1M
VI3
VREF*
2
3
R17
3.83K,0.1%
U1A
10K-POT
CH0
VREF
R25
1M
VI0
+12V
CH1
VREF*
5
-
-
+
1
R36
R40
1.00K,0.1%
C40
0.01uF
6
5
20.0,0.1%
U8B
3.83K,0.1%
-12V
R48
MC34082
+12V
-
+
-
7
6
C24
0.01uF
Q8
MPS6601
7
MC34082
+12V
V4
PH7
PL7
R44
100
+12V
V7
PH4
PL4
R11
100
B7
Q3
MPS6601
7
B4
+12V
V1
PH1
PL1
R41
100
B1
Q5
MPS6601
C3
0.01uF
C32
0.01uF
+
6
C21
0.01uF
C11
0.01uF
MC34082
6
5
R15
20.0,0.1%
19.6K,0.1%
R56
6.81K,0.1%
R52
2
3
R3
R7
1.00K,0.1%
C19
0.01uF
U3B
3.83K,0.1%
-12V
19.6K,0.1%
1
-
+
C29
0.01uF
MC34082
6
5
20.0,0.1%
U5B
R45
MC34082
+12V
R33
R23
6.81K,0.1%
R19
2
+
-12V
3.83K,0.1%
C37
0.01uF
3
1
MC34082
+12V
19.6K,0.1%
R37
1.00K,0.1%
U8A
10K-POT
CH7
VREF
R60
1M
VI7
VREF*
-
+
R53
6.81K,0.1%
U3A
10K-POT
CH4
VREF
R27
1M
VI4
VREF*
2
3
R49
U5A
10K-POT
VREF
R57
1M
VI1
5
U7A
-
1
PH0
PL0
PH1
PL1
PH2
PL2
PH3
PL3
PH4
PL4
PH5
PL5
PH6
PL6
PH7
PL7
R35
R39
1.00K,0.1%
C39
0.01uF
6
5
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
Tuesday, January 21, 1997
Date:
7
Document Number
0500067S
MODEL 7405 STD 8-CHANNEL DAC
-
+
7
Sheet
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
2
8
V7
V6
V5
V4
V3
V2
V1
V0
+12V
V2
of
PH5
PL5
+12V
V5
PH2
PL2
R43
100
B5
Q7
MPS6601
7
C23
0.01uF
C31
0.01uF
MC34082
R47
20.0,0.1%
U7B
Size
B
Title
-
R10
100
B2
8
Q2
MPS6601
C2
0.01uF
C10
0.01uF
+
MC34082
20.0,0.1%
3.83K,0.1%
-12V
6
5
R14
MC34082
U2B
19.6K,0.1%
R55
6.81K,0.1%
R51
2
+12V
R2
R6
1.00K,0.1%
+
-12V
3.83K,0.1%
C18
0.01uF
3
1
MC34082
19.6K,0.1%
R22
6.81K,0.1%
-
+
+12V
P1
SENSORAY COMPANY, INCORPORATED
VREF*
10K-POT
CH5
VREF
R59
1M
VI5
VREF*
2
3
R18
U2A
10K-POT
CH2
VREF
R26
1M
VI2
7
2
Rev
B
D
C
B
A