Measurement Computing 6224 - Manual (Page 41)

Specifications are subject to change without notice.
9-4 Specifications 6224 User’s Manual
Counter Input
Channels ............................................................................. Up to 4 independent
Resolution ........................................................................... 32-bit
Input frequency ................................................................... 20 MHz maximum
Input characteristics ............................................................ 10 k Ω pull-down
Trigger level ....................................................................... TTL
Minimum pulse width ......................................................... 25 ns high, 25 ns low
Programmable modes ......................................................... Counter, Encoder
Encoder resolution .............................................................. x1 (default), x2, and x4
Encoder sources .................................................................. A, B, and Z; can be assigned to any digital pin x.
Counter source .................................................................... Internal Clock, Timer 1, Timer 2, and digital pin x.
One source can be used in multiple counters.
Counter mode options......................................................... Totalize, Clear on Read, Rollover, Stop at the Top,
Increment, Decrement, Rising Edge, Falling Edge
Counter gate options ........................................................... Unused, Internal Clock, Timer 1, Timer 2, and
Digital pin x. One gate can be used in multiple
counters.
Power
Power consumption ........................................................... 6.3 W typ, 6.6 W max
Power jack Barrel type: 5.5 mm O.D.;
2.1 mm I.D.
Physical Characteristics
Weight ............................................................................... 1.3 kg (2.88 lb)
Dimensions 276.9mm W x 169.8mm D x 30.5mm H
(10.9” W x 6.685” D x 1.2” H)
Environmental
6224 units are intended for indoor use only but may be used outdoors if installed in a suitable enclosure.
Operating temperature ........................................................ -40 to 50°C
Storage temperature ............................................................ -40 to 75°C
Ingress protection ............................................................... IP 40
Operating humidity ............................................................ 10 to 90% RH,
Noncondensing ................................................................. 5 to 95% RH, noncondensing
Maximum altitude .............................................................. 2,000 m (6,562 ft)
Pollution Degree ................................................................. 2
Calibration
Calibration interval ............................................................ 1 year
Contact Measurement Computing for information regarding calibration service.
Note: The above calibration information pertains to hardware calibration, not to be confused with “user” or
“software” calibration. When performing a “user” calibration via Encore (or other software) keep in
mind that sample rate affects both gain and offset of the hardware, and therefore any “user”
calibration should be performed at the same sample rate that is intended for measurements.