EA Incremental Encoder Adapter

EA Features

  • Single-ended driver or differential driver/receiver available
  • Three digital channels (A/B/I encoder signals) per adapter
  • Variety of connector options

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EA Product Description

Differential Cable Driver/Receiver

The EA-D-L-10- is a differential RS-422 cable driver which converts the single-ended A/B/I output from USD's single-ended incremental encoders (or any three TTL level digital signals) to 3 pairs of differential signals. This allows the encoder to drive long cables (up to 1000 ft.) and reduces false switching in noisy environments. Various connector options are available on the 5-pin input side of this adapter. The output differential signals are available on a male 10-pin latching connector (FH10). The differential signal from the EA-D-L-10- can be connected directly to USD's QSB and USB4 interface products.

The corresponding receiver, EA-R-L-10- converts the received differential signals back to 3 single-ended TTL level digital signals. The differential input side of the receiver is a 10-pin male latching connector (FH10). Various connector options are available on the single-ended 5-pin output side.

The EA-D-H-10- is the same as the EA-D-L-10-, but offers a wide operating voltage range of 7.5 to 30VDC and a large output voltage swing proportional to the power supply voltage. This adapter allows 5V encoders to be used in high voltage applications.

Single-ended Cable Driver

The EA-D-L-5- driver converts 3 single-ended, low drive digital signals to 3 single-ended, high current drive digital signals. This variant is useful since the TTL outputs of some incremental encoders can sink (pull-down) just under 4mA and source (pull up) only about 200 uA. The output side of the driver is a 5-pin male latching connector (FH5). Various connector options are available on the single-ended 5-pin input side.

The EA-D-H-5- is the same as the EA-D-L-5-, but offers a wide operating voltage range of 7.5 to 30VDC and a large output voltage swing proportional to the power supply voltage. The EA-D-H-5- allows 5V encoders to be used in high voltage applications.

US Digital can supply nearly any cable to your specifications. See the Cables & Connectors page for more information.

Product Specifications

View here or download the specifications

ENVIRONMENTAL

PARAMETER MIN. MAX. UNITS
Operating Temperature -40 85 C
Electrostatic Discharge, Human Body Model
EA-D
EA-D10-HV
EA-R

-3
-1
-3

3
1
3

EA-D-L-5-, EA-D-L-10- DRIVER ELECTRICAL CHARACTERISTICS

PARAMETER MIN. TYP. MAX. UNITS NOTES
Supply Voltage 4.5 - 5.5 Volts -
Supply Current - 4.5 9.0 mA -
Output High Voltage 2.5 - - Volts I(OH) = -20 mA
Output Low Voltage - - 0.8 Volts I(OL) = 20 mA
Propagation Time - - 15 ns -

EA-D-H-5-, EA-D-H-10- DRIVER ELECTRICAL CHARACTERISTICS

PARAMETER MIN. TYP. MAX. UNITS NOTES
Supply Voltage (Vs) 7.5 - 30 Volts  
Encoder Supply Current - - 200 mA  
Propagation Time - 236 330 ns  
Output Low Voltage  - 0.5 Volts  
Output High Voltage  - Vs - 2.0  - Volts  
Output Current Source/Sink  - 20 mA  

EA-R-L-10- RECEIVER ELECTRICAL CHARACTERISTICS

PARAMETER MIN. TYP. MAX. UNITS NOTES
Supply Voltage 4.5 - 5.5 Volts -
Supply Current - 16 25 mA -
Input High Voltage 2.0 - - Volts I(OH) = -20 mA
Input Low Voltage - - 0.8 Volts I(OL) = 20 mA
Propagation Time - - 35 ns -

DRIVER (EA-D-) PINOUT

For a Driver, the input connector is a 4-pin or 5-pin connector chosen from: H5, FH5, C5, FC5, LC5, MIC4, W5. See "4-pin, 5-pin Connector Options" for pictures of the available connectors.
The output connector is either a 5-pin latching connector (FH5) or a 10-pin latching connector (FH10).

FH5 Output Connector:

FH10 Output Connector:

PIN INPUT 4-PIN CONNECTOR (MIC4) INPUT 5-PIN CONNECTOR (H5, FH5, C5, FC5, LC5, W5) EA-D-L-5-/EA-D-H-5-  OUTPUT 5-PIN CONNECTOR
(FH5)
EA-D-L-10-/EA-D-H-10- OUTPUT 10-PIN CONNECTOR
(FH10)
1 +5VDC power Ground Ground  Ground
2 A channel (in) Index (in) Index (out)  Ground
3 Ground A channel (in) A channel (out)  Index- (out)
4 B channel (in) +5VDC power +5VDC power
+7.5 to +30VDC power in (EA-D-H-5- only)
 Index+ (out)
5   B channel (in)  B channel (out)  A- channel (out)
6        A+ channel (out)
7        +5VDC power
+7.5 to +30VDC power in (EA-D-H-10- only)
8          +5VDC power
+7.5 to +30VDC power in (EA-D-H-10- only)
9        B- channel (out)
10        B+ channel (out)

Notes:

(1) For the Low voltage (EA-D-L-) versions, the +5VDC pins on the input and output connectors are electrically connected together, so power can be applied on either the input or output connector. For the High voltage (EA-D-H-) versions, the 7.5 to 30VDC power is applied at the OUTPUT connector. +5V out is generated at the INPUT connector.

RECEIVER (EA-R-) PINOUT

For a Receiver, the input connector is always a 10-pin latching connector (FH10). The output connector is a
5-pin connector chosen from: H5, FH5, C5, FC5, LC5, W5. See
"4-pin, 5-pin Connector Options" for pictures of the available connectors.

FH10 Input Connector

PIN INPUT 10-PIN CONNECTOR (FH10) OUTPUT 5-PIN CONNECTOR
(H5, FH5, C5, FC5, LC5, W5)
1 Ground Ground
2 Ground Index (out)
3 Index- (in) A channel (out)
4 Index+ (in) +5VDC power
5 A- channel (in) B channel (out)
6 A+ channel (in)  
7 +5VDC power   
8   +5VDC power  
9 B- channel (in)  
10 B+ channel (in)  

Notes:

(1) The +5VDC pins on the input and output connectors are electrically connected, so power can be applied on either the input or output connector.

4-PIN, 5-PIN CONNECTOR OPTIONS

CONNECTOR DESCRIPTION
H5 5-pin right-angle male header soldered in place.
FH5 5-pin latching header soldered in place.
W5* Five 12" discrete wires, no connector on the end.
C5 Five 6" discrete wires with a standard mating connector on the end.
LC5 Five 6" discrete wires with a locking mating connector on the end.
FC5 Five 6" discrete wires with a latching mating connector.
MIC4 Four 6" discrete wires with a micro mating connector.
W5* H5 FH5 C5
LC5 FC5 MIC4

*Note: The W5 pin-outs are as follows:

PIN DESCRIPTION COLOR
1 Ground Brown
2 Index Violet or NC
3 A channel Blue
4 +5VDC power Orange
5 B channel Yellow

Additional Information

Product Notes

  • US Digital® warrants its products against defects in materials and workmanship for two years. See complete warranty for details.

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