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

ENVIRONMENTAL

PARAMETER VALUE UNITS
Operating Temperature -40 to 85  C
Electrostatic Discharge, Human Body Model
EA-D
EA-D10-HV
EA-R
± 3
± 1
± 3		 kV

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

DRIVER VS. RECEIVER

Additional Information

Product Notes

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

Datasheets

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