page
1
phone: 360.260.2468
l
sales: 800.736.0194
l
fax: 360.260.2469
email: sales@usdigital.com
l
website: www.usdigital.com
11100 ne 34th circle
l
vancouver, washington 98682 USA
HEDS
Agilent Optical Encoder Module
US
Digital
C o r p o r a t i o n
TM
This incremental optical encoder module is used to detect a linear or
rotary position when used together with a codewheel. Each module
consists of a lensed LED source and a monolithic detector IC enclosed
in a small plastic package. They are available in 2 channel or 3 channel
versions. The resolution and index version of the modules and
codewheels must match. They can easily be mounted by using 4-40
screws through the mounting holes. These devices are very reliable
when connected properly. Improper connections are the most common
cause of failure.
For maximum noise immunity or cables longer than 6FT, add a cable
driver option (see our cable driver products). For open collector or
higher voltage applications, add a high voltage cable driver (see the
PC3, EA-D5HV, EA-D10HV data sheets).
Agilent announced that they will discontinue a number of their optical
encoder module resolutions and associated encoders. Some of these
discontinued resolutions, plus additional resolutions, are readily avail-
able from US Digital. For further information on our own incremental
optical encoder module (see the EM1 data sheet).
Description:
Parameter
Min.
Max.
Units
Notes
Temperature
-40
100
C
Supply Voltage
4.5
5.5
Volts
Ripple<100mV
P-P
Load Capacitance
-
100
pF
Count Frequency
-
100
kHz
rpm/60 x cycles/rev.
Recommended Operating Conditions:
Mechanical Specifications:
Electrical Characteristics:
[1]
Parameter
Min.
Typ.
Max.
Notes
Supply Current
-
17
40
High Level Output Voltage
2.4
-
-
I
OH
= -40 A max.
Low Level Output Voltage
-
-
0.4
I
OL
= 3.2 mA max.
Rise Time
-
200
-
25pF, 11KOhm pullup
Fall Time
-
50
-
25pF, 11KOhm pullup
[1]
Min.
Typ.
Max.
Units
Notes
3
0
57
85
mA
2.4
-
-
Volts
I
OH
= -200 A max.
-
-
0.4
Volts
I
OL
= 3.86 mA max.
-
180
-
ns
25pF, 2.7KOhm pullup
-
49
-
ns
25pF, 2.7KOhm pullup
[2]
[2]
Non-Index (2-channel) or
1" disk <1000 CPR or 2" disk <2000 CPR
With Index Option (3-channel) or
1" disk =>1000 CPR or 2" disk =>2000 CPR
Specifications apply over entire operating temperature range. Typical values are specified at Vcc= 5.0V and 25C.
1. Unloaded high level output voltage is 4.80v typically, 4.2v minimum.
2. 80 nSec for HEDS-9040 #T00 (2000 CPR With Index).
Parameter
Min.
Max.
Units
Storage Temperature
-40
100
C
Supply Voltage, Vcc
-0.5
7.0
Volts
Output Voltage
-0.5
Vcc
Volts
Output Current per Channel
-1.0
5.0
mA
Absolute Maximum Ratings:
Two channel quadrature output with optional index pulse
Resolution up to 2048 CPR
No signal adjustment required
Small size
-40C to 100C operating temperature
TTL compatible
Single +5V supply
Features:
page
2
phone: 360.260.2468
l
sales: 800.736.0194
l
fax: 360.260.2469
email: sales@usdigital.com
l
website: www.usdigital.com
11100 ne 34th circle
l
vancouver, washington 98682 USA
HEDS
Agilent Optical Encoder Module
US
Digital
C o r p o r a t i o n
TM
Timing Diagram:
CPR (N): The number of Cycles Per Revolution.
One Shaft Rotation: 360 mechanical degrees, N cycles.
One Electrical Degree (e): 1/360 of one cycle.
One Cycle (C): 360 electrical degrees (e). Each cycle can be decoded into 1 or 4 codes, referred to as X1 or X4 resolution multiplication.
Symmetry: A measure of the relationship between (X) and (Y) in electrical degrees, nominally 180e.
Quadrature (Z): The phase lag or lead between channels A and B in electrical degrees, nominally 90e.
Index (CH I.): The index output goes high once per revolution, coincident with the low states of channels A and B, nominally 1/4 of one cycle (90e).
Position error: The difference between the actual shaft position and the position indicated by the encoder cycle count.
Cycle error: An indication of cycle uniformity. The difference between an observed shaft angle which gives rise to one electrical cycle, and the nominal
angular increment of 1/N of a revolution.
Shaft Rotation for Shaft Encoders:
View the encoder so the shaft/bushing side is facing up.
H1:
A leads B in a clockwise rotation; B leads A in a counterclockwise rotation.
H3, H5D, H5S, H6D, H6S, HD25, S1, S2, S5D, S5S, S6D, S6S and SP-16:
B leads A in a clockwise rotation; A leads B in a counterclockwse rotation.
Shaft Rotation for Kit Encoders:
View the encoder so the cover side is facing up.
E3, E5D, E5M, E5S, E6D, E6M and E6S:
A leads B in a clockwise rotation; B leads A in a counterclockwise rotation.
E2:
B leads A in a clockwise rotation; A leads B in a counterclockwise rotation.
Specifications apply over entire operating temperature range. Values are for the worst error over a
full rotation.
Parameter
Symbol
Min.
Typ.
Max
Units
Cycle Error
35.5
e
Symmetry
150
180
210
e
Quadrature
60
90
120
e
Index Pulse Width
Po
60
90
120
e
CH. I Rise After CH. B or CH. A Fall
t1
-300
100
250
ns
CH. I Fall After CH. A or CH. B Rise
t2
70
150
1000
ns
Encoder Characteristics:
Encoder Characteristics for HEDS-9040#T00 (2000-I, 2048-I):
Specifications apply over entire operating temperature range. Values are for the worst error over a
full rotation.
Parameter
Symbol
Min.
Typ.
Max
Units
Cycle Error
37.5
e
Symmetry
130
180
230
e
Quadrature
40
90
140
e
Index Pulse Width
Po
40
90
140
e
CH. I Rise After CH. B or CH. A Fall
t1
10
450
1500
ns
CH. I Fall After CH. A or CH. B Rise
t2
10
250
1500
ns
page
3
phone: 360.260.2468
l
sales: 800.736.0194
l
fax: 360.260.2469
email: sales@usdigital.com
l
website: www.usdigital.com
11100 ne 34th circle
l
vancouver, washington 98682 USA
HEDS
Agilent Optical Encoder Module
US
Digital
C o r p o r a t i o n
TM
Ordering Information:
Technical Data, Rev. 03.19.03, March 2003
All information subject to change without notice.
For EM1 pricing and ordering information,
please see the EM1 Data Sheet.
EM1 Pricing:
Standard Price:
$25.00 / 1
$22.00 / 10
$20.00 / 50
$18.50 / 100
$17.50 / 500
$17.00 / 1K
Index/Linear/HiRes/Price:
HiRes: =>540 CPR (1"), =>1016 CPR (2")
$28.00 / 1
$24.64 / 10
$22.40 / 50
$20.72 / 100
$19.60 / 500
$19.04 / 1K
1" Disk Resolutions
& Matching Modules
:
CPR
Standard
With Index
32*
EM1-1-32
EM1-1-32
50
HEDS-9100-S00
HEDS-9140-S00
96
HEDS-9100-C00
HEDS-9140-C00
100
HEDS-9100-C00
HEDS-9140-C00
110
HEDS-9100-C00
Unavailable
120
HEDS-9100-C00
Unavailable
192
HEDS-9100-E00
HEDS-9140-E00
200
HEDS-9100-E00
HEDS-9140-E00
250
HEDS-9100-F00
HEDS-9140-F00
256
HEDS-9100-F00
HEDS-9140-F00
360
HEDS-9100-G00
HEDS-9140-G00
400
HEDS-9100-H00
HEDS-9140-H00
500
HEDS-9100-A00
HEDS-9140-A00
512
HEDS-9100-I00
HEDS-9140-I00
540
HEDS-9100-I00
Unavailable
1000
HEDS-9100-B00
Unavailable
1016
HEDS-9100-J00
Unavailable
1024
HEDS-9100-J00
Unavailable
* Only available in EM1.
2" Disk Resolutions
& Matching Modules
:
CPR
Standard
With Index
64*
EM1-1-32
EM1-1-32
100
HEDS-9100-S00
HEDS-9140-S00
200
HEDS-9100-C00
HEDS-9140-C00
400
HEDS-9100-E00
Unavailable
500
HEDS-9000-A00
HEDS-9140-F00
512
HEDS-9000-A00
Unavailable
1000
HEDS-9000-B00
HEDS-9040-B00
1024
HEDS-9000-J00
HEDS-9040-J00
2000
HEDS-9000-T00
HEDS-9040-T00
2048
HEDS-9000-U00
HEDS-9040-T00
* Only available in EM1, 64 CPR uses the
EM1-1-32 module.
Linear Strip Resolutions
& Matching Modules
:
CPR
Standard
With Index
120*
EM1-0-120
EM1-0-120
125
EM1-0-127
EM1-0-127
127
EM1-0-127
EM1-0-127
150
EM1-0-150
EM1-0-150
180
HEDS-9200-Q00
Unavailable
200
EM1-0-200
EM1-0-200
250
EM1-0-250
EM1-0250
300
HEDS-9200-300
Unavailable
360
HEDS-9200-360
Unavailable
* Only available in EM1, 125 CPI uses the
EM1-0-127 module.
A number of Agilent optical encoder
modules are being discontinued. The
following modules are no longer
offerered by Agilent:
HEDS-9200-L00
120 CPI
HEDS-9200-M00
127 CPI
HEDS-9200-P00
150 CPI
HEDS-9200-R00
540 CPR
200 CPI
HEDS-9100-D00
192 CPR
Discontinued Modules:
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