Fluke 2680A User Manual page 224

2680A/2686A
Users Manual
Digital Input/Output Module
The following specifications apply to the DIO Module. The module contains
digital inputs, digital open collector outputs, relay contacts, and totalizer.
The DIO module is rated as a CAT I device.
Digital Input/Output Specifications
Table specifications provides a summary of the Digital I/O specifications for the
10 Digital I/O lines (0 to 19). Digital I/O is located on the Output Module Digital
connector, terminals 0 to 19, and GND.
Specification
Maximum Input Voltage
Minimum Input Voltage
Isolation
Threshold
Hysteresis
Output Voltage - TTL Logical Zero
Output Voltage - TTL Logical One
Output Voltage - Non-TTL Load Zero
A-28
XWWarning
Table A-37. DIGITAL I/O Specification
30 V
-4 V
None (dc coupled)
1.4 V
500 mV
0.8 V maximum for an Iout of -1.0 mA (1 LSTTL
load)
3.8 V minimum for an Iout of 0.05 mA (1 LSTTL
load)
1.8 V maximum for an Iout of -20 mA
3.25 V maximum for an Iout of -50 mA
Characteristic