5
Encoding Characteristics
HEDS-9040 #T00
Encoding Characteristics over Recommended Operating Range and Recommended Mounting Tolerances
unless otherwise specified. Values are for the worst error over the full rotation of HEDM-614X Option TXX
codewheel.
Parameter
Cycle Error
Pulse Width Error
Logic State Width Error
Phase Error
Position Error
Index Pulse Width
CH. I rise after
CH. B or CH. A fall
CH. I fall after
CH. A or CH. B rise
-40°C to +100°C
Symbol
∆C
∆P
∆S
∆φ
∆Θ
P
O
t
1
t
2
40
10
Min.
Typ.
[1]
3
7
5
2
2
90
450
Max.
7.5
50
50
15
20
140
1500
Units
°e
°e
°e
°e
min. of arc
°e
ns
-40°C to +100°C
10
250
1500
ns
Note:
1. Module mounted on tolerance circle of
±
0.13 mm (± 0.005 in.) radius referenced from module Side A aligning recess centers. 2.7 kΩ
pull-up resistors used on all encoder module outputs.
Electrical Characteristics
Electrical Characteristics over Recommended Operating Range.
Parameter
Supply Current
High Level Output Voltage
Low Level Output Voltage
Rise Time
Fall Time
Symbol
I
CC
V
OH
V
OL
t
r
t
f
180
[2]
49
[2]
Min.
30
2.4
0.4
Typ.
[1]
57
Max.
85
Units
mA
V
V
ns
ns
I
OH
= -200
µA
max.
I
OL
= 3.86 mA
C
L
= 25 pF
R
L
= 2.7 kΩ pull-up
Notes
Notes:
1. Typical values specified at V
CC
= 5.0 V and 25°C.
2. t
r
and t
f
80 nsec for HEDS-9040 #T00.
HP [ AGILENT(HEWLETT-PACKARD) ]
