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4.2 T7 Hardware

Support - T7/Hardware-Overview

T7 Hardware Overview

The T7 has 3 different I/O areas:

  • Communication Edge: The T7 has a USB type B connector and an RJ45 Ethernet connector.  The T7-Pro has those and also has an SMA-RP female connector and a WiFi antenna. Power is always provided through the USB connector, even if USB communication is not used.
  • Screw Terminal Edge: The screw terminal edge has convenient connections for 4 analog inputs, both analog outputs, 4 digital I/O, and both current sources. The screw terminals are arranged in blocks of 4, with each block consisting of VS, GND, and two I/O. Also on this edge are two LEDs. The Comm LED generally blinks with communication traffic, while the Status LED is used for other indications.
  • DB Edge: The DB Edge has 2 D-sub type connectors: a DB15 and DB37. The DB15 has 12 digital I/O.  The DB37 has the same I/O as the screw-terminals, plus additional analog inputs and digital I/O, for a total of 14 analog inputs, 2 analog outputs, 2 fixed current sources, and 11 digital I/O.

Figure 4.2-1.  Enclosure & Connectors

 

USB:  Can be used for communication.  Power is always provided through this connector.

Ethernet:  10/100Base-T Ethernet connection can be used for communication.

WiFi (T7-Pro only): 2.4 GHz 802.11 b/g WiFi connection can be use for communication.

LEDs:  The Power and Status LEDs convey different information about the device.

VS:  All VS terminals are the same.  These are outputs that can be used to source about 5 volts.

GND/SGND:  All GND terminals are the same.  SGND has a self-resetting thermal fuse in series with GND.

10UA/200UA:  Fixed current sources providing 10µA/200µA at a max voltage of about 3 volts.

FIO#/EIO#/CIO#/MIO#:  These are the 23 digital I/O, and are also referred to as DIO0-DIO22.  Besides basic digital I/O operations, some of these terminals can also be configured with Extended Features (frequency input, PWM output, etc.), and all can be configured for various serial protocols: I2C serial, SPI serial, SBUS serial (EI-1050, SHT sensors), 1-Wire serial, and Asynchronous serial.

AIN#:  AIN0-AIN13 are the 14 analog inputs.

DAC#:  DAC0 & DAC1 are the 2 analog outputs.  Each DAC can be set to a voltage between about 0.01 and 5 volts with 12-bits of resolution.

 

For information about reading inputs, start in Section 3.  For information about setting outputs, start with the Waveform Generation Application Note.

 

T7 Block Diagram

Figure 4.2-2.  Block Diagram