Measurement Computing 6224 - Manual (Page 40)

Specifications are subject to change without notice.
6224 User’s Manual Specifications 9-3
Digital I/O
Channels: 8 Digital I/O, programmable as a
single port, or as individual lines
Power-up mode: Inputs pulled low
Connector: DB-9 female (figure)
DB9 – As viewed from the rear panel.
Programmable Input Scanning Modes:
Asynchronous: ............................................................. Under program control at any time relative to analog
scanning.
Synchronous: ............................................................... Data captured synchronously with the analog
channels.
Input Levels:
Low: ........................................................................... 0 to +0.8V
High: ........................................................................... +2.0V to +5.0V
Input Voltage Range without Damage: .............................. -0.6V to
+5.6V max
Input pull-down resistor: .................................................... 10kΩ
Output voltage range: ........................................................ 0 to +3.0V
(may be externally pulled up to 5.6V without damage)
Output resistance: ............................................................... 40Ω
Output Levels: (see 6000 Series Digital Output graph below)
Sampling: .......................................................................... 1 MHz max
continuous
Output timing: ................................................................... Outputs are always written asynchronously.
Input / Output Circuit
Digital I/O
Channel/Line
Numbers