Fluke 2638A/20 Product Manual - Page 63

Digital I/O (DIO) Channel Configuration (Ch401), digital I/O DIO port.

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3 Input and Channel Configuration Channel Configuration Digital I/O (DIO) Channel Configuration (Ch401) The Product can sense and output a digital, 8-bit transistor-transistor logic (TTL) value that can be displayed as the 8-bit TTL value and be recorded as the decimal equivalent. This is accomplished with the rear-panel digital I/O connectors (DIO) that are shown in Figure 3-7. When a DIO input is sensed, the Product displays the status of the digital I/O as 8-bit TTL value and records the decimal equivalent. The 8-bit TTL value can also be seen when a channel is monitored. The default value is a high state that shows as "11111111" until the Product senses a low state or is used as an output. A few examples of some 8-bit TTL values and their decimal equivalents are shown below: • 11111111 is represented by decimal 255 • 00001111 is represented by decimal 15 • 00010001 is represented by decimal 17 • 10000101 is represented by decimal 133 Notes For input and output specifications such as input and output voltages, see "Digital I/O" in Chapter 1. The DIO channel will be read-only when it is set to ON (active). With a remote command, the Product can output an 8-bit TTL value. See the 2638A Remote Programmers Guide for more information. Terminal TOT 1 2 3 4 5 6 7 8 GND Function Totalizer Input Input/Output Line 1 Input/Output Line 2 Input/Output Line 3 Input/Output Line 4 Input/Output Line 5 Input/Output Line 6 Input/Output Line 7 Input/Output Line 8 Ground Terminal Figure 3-7. DIO Connector hcn040.eps Set up the DIO channel as follows: 1. Connect the equipment to the DIO input terminal then insert it into the rear-panel digital I/O (DIO) port. 2. Push . 3-23 MyFlukeStore Shop for Fluke products online at: www. .com 1.888.610.7664

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Input and Channel Configuration
Channel Configuration
3
3-23
Digital I/O (DIO) Channel Configuration (Ch401)
The Product can sense and output a digital, 8-bit transistor-transistor logic (TTL) value
that can be displayed as the 8-bit TTL value and be recorded as the decimal equivalent.
This is accomplished with the rear-panel digital I/O connectors (DIO) that are shown in
Figure 3-7.
When a DIO input is sensed, the Product displays the status of the digital I/O as 8-bit
TTL value and records the decimal equivalent. The 8-bit TTL value can also be seen
when a channel is monitored. The default value is a high state that shows as “11111111”
until the Product senses a low state or is used as an output. A few examples of
some 8-bit
TTL values and their decimal equivalents are shown below:
•
11111111 is represented by decimal 255
•
00001111 is represented by decimal 15
•
00010001 is represented by decimal 17
•
10000101 is represented by decimal 133
Notes
For input and output specifications such as input and output voltages, see
“Digital I/O” in Chapter 1.
The DIO channel will be read-only when it is set to ON (active).
With a remote command, the Product can output an 8-bit TTL value. See the
2638A Remote Programmers Guide
for more information.
Terminal
TOT
1
2
3
4
5
6
7
8
GND
Function
Totalizer Input
Input/Output Line 1
Input/Output Line 2
Input/Output Line 3
Input/Output Line 4
Input/Output Line 5
Input/Output Line 6
Input/Output Line 7
Input/Output Line 8
Ground Terminal
hcn040.eps
Figure 3-7. DIO Connector
Set up the DIO channel as follows:
1.
Connect the equipment to the DIO input terminal then insert it into the rear-panel
digital I/O (DIO) port.
2.
Push
.
Shop for Fluke products online at:
1.888.610.7664
www.
MyFlukeStore
.com