Digital Input/Output Tests; Rs-232 Digital Input/Output Test - Fluke 2680A User Manual

Resistance Range
300 Ω
300 Ω
3 kΩ
3 kΩ
30 kΩ
300 kΩ
3 MΩ

Digital Input/Output Tests

All configuration for the Digital Input/Output Tests is done using the
Communications dialog. To change DIO settings, click the DIO module icon in the
TreeView display. Use the Spy function to monitor DIO settings.
The Digital Input/Output Tests check the 20 Digital I/O lines on the Digital I/O
connector for output and input functions

RS-232 Digital Input/Output Test

To output bits use the DIO <mask>,<value> command. Set the mask to 1048575.
Use the command "DIO?" for input. The value can range from 1 to 1048575
(2^20 - 1).
1. Set Signal Lines High Set all of the signal lines high using the DIO
1048575,1048575 command.
2. Verify Signal Verify that all of the signal lines are equal to or greater than
+3.5 V dc.
3. Set Signal Line Low Set all of the signal lines low using the DIO 1048575,0
command.
4. Verify Signal Verify that all of the signal lines are less than or equal to
1 V dc. Leave them all low.
5. Toggle Each Line Toggle each line and verify that the signal line responds.
For example, to toggle DIO0 output, send the command DIO 1048575,1.
Physically verify that the signal line is off (high) and then use the DIO?
command to read back the setting. Clear the bit using DIO 1048575,0.
Physically verify that the signal line is on (low) and then use the DIO?
command to read back the setting. To toggle DIO 7, send the command DIO
1048575,128 followed by DIO 1048575,0. To toggle DIO 19, send the
5700A
Short Circuit (Zero)
190 Ω
Short Circuit (Zero)
1.9 kΩ
19 kΩ
190 kΩ
1.9 MΩ
Accuracy Performance Tests
Minimum Reading
0 Ω
189.86 Ω
0 Ω
1.8986 kΩ
18.986 kΩ
188.90 kΩ
1.8733 MΩ
Maintenance
Maximum Reading
0.1 Ω
190.14 Ω
1.0 Ω
1.9014 kΩ
19.014 kΩ
191.10 kΩ
1.9267 MΩ
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