© National Instruments | A-1
A
Specifications
This appendix lists the SCB-68A specifications. These specifications are typical at 25 °C unless
otherwise noted.
Caution Do not connect hazardous voltages (>30 V
rms
/42 V
pk
/60 VDC) to the
SCB-68A.
Temperature Sensor
Accuracy ........................................................... ±1.0 °C over a 0 to 70 °C range
Power Requirement
Power consumption (at +5 VDC, ±5%)
Typical ...................................................... 1 mA with no signal conditioning installed
Maximum.................................................. 800 mA from host computer
Note The power specifications pertain to the power supply of the host computer
when using internal power or to the external supply connected at the +5 V screw
terminal when using external power. The maximum power consumption of the
SCB-68A is a function of the signal conditioning components installed and any
circuits constructed on the general-purpose breadboard area. If the SCB-68A is
powered from the host computer, the maximum +5 V current draw, which is limited
by the fuse, is 800 mA.
Fuse
Rating................................................................ 1.10 A, 8 VDC SMT PTC
Fuse is not user-replaceable
Physical Characteristics
Dimensions (including feet) ............................. 14.7 × 14.7 × 3.0 cm (5.8 × 5.8 × 1.2 in.)
Weight............................................................... 644 g (1 lb 7 oz)
I/O connector .................................................... One 68-pin male SCSI connector
Screw terminals ................................................ 68, all I/O signals are available at
screw terminals
Wire gauge................................................ 14–30 AWG
Torque....................................................... 0.5–0.6 N ⋅ m (4.4–5.3 in. ⋅ lb)
Through hole pads ............................................ 0.8 to 0.9 mm (in diameter)
To Next Page
Loading...
