Panel Mount Optical Encoders
Technical Data
HEDS-5700 Series
Features
Two Channel Quadrature
Output with Optional Index
Pulse
Available with or without
Static Drag for Manual or
Mechanized Operation
High Resolution Up to
512 CPR
Long Rotational Life,
>1 Million Revolutions
-20 to 85
C Operating
Temperature Range
TTL Quadrature Output
Single 5 V Supply
Available with Color Coded
Leads
Description
The HEDS-5700 series is a family
of low cost, high performance,
optical incremental encoders with
mounted shafts and bushings. The
HEDS-5700 is available with
tactile feedback for hand operated
panel mount applications, or with
a free spinning shaft for applica-
tions requiring a pre-assembled
encoder for position sensing.
The encoder contains a collimated
LED light source and special
detector circuit which allows for
high resolution, excellent encod-
ing performance, long rotational
life, and increased reliability. The
unit outputs two digital wave-
forms which are 90 degrees out of
phase to provide position and
direction information. The
HEDS-5740 Series provides a
third Index Channel.
*
Package Dimensions
OPTIONAL WIRING
COLOR CODE TABLE
COLOR
WHITE
BROWN
RED
BLACK
BLUE
(THREE
CHANNEL)
OUTPUT
A
B
V
CC
GND
I
*Note: For the HEDS-5700, Pin #2 is a No Connect. For
the HEDS-5740, Pin #2 is Channel I, the index output.
THREAD 3/8-32
NUT 3/8-32 x 7/16"
2
Electrical Characteristics
Over Recommended Operating Range, Typical at 25
C
Parameter
Symbol
Min.
Typ.
Max.
Units
Notes
Supply Current
I
CC
17
40
mA
Two Channel
57
85
Three Channel
High Level Output Voltage
V
OH
2.4
V
I
OH
= -40
A Max.
Low Level Output Voltage
V
OL
0.4
V
I
OL
= 3.2 mA
Note: If more source current is required, use a 3.2 K pullup resistor on each output.
The HEDS-5700 is quickly and
easily mounted to a front panel
using the threaded bushing, or it
can be directly coupled to a motor
shaft (or gear train) for position
sensing applications.
Applications
The HEDS-5700 with the static
drag option is best suited for
applications requiring digital
information from a manually
operated knob. Typical front
panel applications include
instruments, CAD/CAM systems,
and audio/video control boards.
The HEDS-5700 without static
drag (free spinning) is best suited
for low speed, mechanized
operations. Typical applications
are copiers, X-Y tables, and
assembly line equipment.
Absolute Maximum Ratings
Parameter
Symbol
Min.
Max.
Units
Notes
Storage Temperature
T
s
-40
+85
C
Operating Temperature
T
a
-20
+85
C
Vibration
20
g
20 Hz - 2 kHz
Supply Voltage
V
CC
-0.5
7
V
Output Voltage
V
O
-0.5
V
CC
V
Output Current per Channel
I
O
-1
5
mA
Shaft Load Axial
1
lb
Radial
1
lb
Recommended Operating Conditions
Parameter
Symbol
Min.
Max.
Units
Notes
Temperature
T
-20
+85
C
Noncondensing Atmosphere
Supply Voltage
V
CC
4.5
5.5
V
Ripple <100 mV
p-p
Rotational Speed Drag
300
RPM
Free Spinning
2000
RPM
Note: Agilent Technologies
encoders are not recommended
for use in safety critical
applications. Eg. ABS braking
systems, power steering, life
support systems and critical care
medical equipment. Please
contact sales representative if
more clarification is needed.
3
Mechanical Characteristics
Parameter
Min.
Typ.
Max.
Units
Notes
Starting Torque
Static Drag
0.47
oz in
Free Spinning
0.14
oz in
Dynamic Drag
Static Drag
1.1
oz in
100 RPM
Free Spinning
0.70
oz in
2000 RPM
Rotational Life
Static Drag
1 x 10
6
Revolutions
1 lb Load
Free Spinning
12 x 10
6
Revolutions
4 oz Radial Load
Mounting Torque of Nut
13
lb in
HEDS-57
Shaft Configuration
0 - 1/4" dia. with no flat
1 - 6 mm dia. with no flat
2 - 1/4" dia. with flat
Drag Option
0 - Free Spinning
1 - Static Drag
Resolutions
(Cycles Per Revolution)
HEDS-570X 2 Channel
K - 96 CPR
G - 360 CPR
C - 100 CPR
A - 500 CPR
F - 256 CPR
I - 512 CPR
HEDS-574X Three Channel*
A - 500 CPR
Outputs
0 - 2 Channel
4 - 3 Channel
Mechanical
Configuration
0 - Pins
1 - 6" Coded Leads
Output Waveforms
Ordering Information
360 5.5
180 45
S1
S2
S3
S4
90 45 TYPICAL
90 45
CH A
CH B
CH I
NOTE:
ALL VALUES ARE IN ELECTRICAL DEGREES, WHERE 360 e = 1 CYCLE OF RESOLUTION.
ERRORS ARE WORST CASE OVER ONE REVOLUTION.
CH B LEADS CH A FOR COUNTERCLOCKWISE ROTATION.
CH A LEADS CH B FOR CLOCKWISE ROTATION.
*Please contact factory for other resolutions.
00
01
02
10
11
12
HEDS-5700#
A
*
*
*
C
*
*
*
*
F
*
*
*
G
*
I
*
*
*
*
*
K
*
*
HEDS-5701#
A
*
*
*
C
*
F
*
*
*
*
G
*
H
*
*
I
*
HEDS-5740#
A
*
www.agilent.com/semiconductors
For product information and a complete list of
distributors, please go to our web site.
For technical assistance call:
Americas/Canada: +1 (800) 235-0312 or
(408) 654-8675
Europe: +49 (0) 6441 92460
China: 10800 650 0017
Hong Kong: (+65) 271 2451
India, Australia, New Zealand: (+65) 271 2394
Japan: (+81 3) 3335-8152(Domestic/Interna-
tional), or 0120-61-1280(Domestic Only)
Korea: (+65) 271 2194
Malaysia, Singapore: (+65) 271 2054
Taiwan: (+65) 271 2654
Data subject to change.
Copyright 2002 Agilent Technologies, Inc.
Obsoletes 5988-2565EN
March 15, 2002
5988-5856EN
PDF 
ZIP