Products for USB Sensing and Control
1047_1 - PhidgetEncoder HighSpeed 4-Input
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Qty: 47

Product Features

Read up to four encoders simultaneously with this Encoder Interface. You can read limit switches or other simple sensors with the digital inputs.
Product Description

The PhidgetEncoder Highspeed 4-Input can be used with a wide assortment of mechanical and optical encoders. The encoder should be of quadrature output type, indicating that there will be two quadrature output channels (usually labeled A and B) and an optional third output channel to signal when the index pin (a reference point for zero position or a complete revolution) has been reached.

The PhidgetEncoder Highspeed 4-Input is able to read four encoders simultaneously. Encoders are not powered up until all initialization of the device is complete. It is possible to enable some or all encoders, depending on how many of the channels are being used. This can also be used to reduce power consumption when certain encoders are not needed.

The PhidgetEncoder Highspeed 4-Input has the added ability to time the duration between a group of quadrature changes. The time is returned in microseconds. This time value can be used to calculate velocity and acceleration.

Both mechanical and optical encoders are available, with optical encoders dominating at > 100 counts per second. Review the data sheet for the encoder you are planning to use to ensure it is compatible with the PhidgetEncoder Highspeed 4-Input. Almost any incremental quadrature encoder will work but it is important to verify this before connecting it to the Phidget. Absolute encoders will not work with this device. Ideally, you should choose a quadrature encoder with a 5-pin output and the following pinout in order to be directly compatible with the 1047.

This particular revision of the 1047 has improved power switches to enhance system stability when turning off and on separate encoder inputs. It also has updated firmware with a few minor bug fixes.

Related Products

If you only need a single encoder, check out the 1057 - PhidgetEncoder HighSpeed.

Comes Packaged with:

Previous Versions of the 1047


You can protect your board by purchasing the 3809 - Acrylic Enclosure for the 1047.

Product Specifications

Encoder Interface

API Object NameEncoder
Number of Encoder Inputs4
Count Rate Max1E+06 pulses/s
Encoder Interface Resolutionx4
Update Rate125 samples/s
Time Resolution1 μs
Encoder Input Low Voltage Max800 mV DC
Encoder Input High Voltage Min2.1 V DC
USB SpeedFull Speed

Electrical Properties

Encoder Pull-up Resistance10 kΩ
Current Consumption Max470 mA
Current Consumption Max (per encoder)200 mA
Current Consumption Min30 mA
USB Voltage Min4.8 V DC
USB Voltage Max5.3 V DC

Physical Properties

Recommended Wire Size16 - 26 AWG
Operating Temperature Min0 °C
Operating Temperature Max70 °C

Digital Inputs

Number of Digital Inputs4
Pull-up Resistance15 kΩ
Low Voltage Max (True)800 mV DC
High Voltage Min (False)2.1 V DC
Low Voltage Trigger Length Min4 ms
High Voltage Trigger Length Min16 ms
Digital Input Voltage Max± 15 V DC
Digital Input Update Rate125 samples/s