Measurement Computing 6222 - Manual (Page 26)

Specifications are subject to change without notice.
8-2 Specifications 6222 User’s Manual
Removable screw-terminal blocks ..................................... 3 blocks, 4 channels per block, 10 terminals per block
Screw-terminal wiring ........................................................ 12 to 24 AWG wire with 10mm (0.39 in.) section
............................................................................................ of insulation stripped from connection end
Torque for screw terminals ................................................. 0.5 to 0.6 N  m (4.4 to 5.3 lb  in.)
Ferrules (optional, not supplied) ......................................... 0.25mm 2 to 2.5mm 2
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 +0.8 V
High ............................................................................ +2.0 V to +5.0 V
Input voltage range without damage .......................... –0.6 V to +5.6 V
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.
2 Refer to the synchronization section of chapter 1 for information regarding multiple devices.
Input / Output Circuit
Digital I/O
Channel/Line
Numbers