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The National Instruments NI SCB-68 Terminal Block is a shielded I/O connector block for interfacing I/O signals to plug-in data acquisition (DAQ) devices with 68-pin connectors. Combined with the shielded cables, the SCB-68 provides rugged, very low-noise signal termination. It is compatible with single- and dual-connector NI X Series and M Series devices with 68-pin connectors. The connector block is also compatible with most NI E, B, S, and R Series DAQ devices.

Specifications:

• Temperature Sensor Accuracy: ±1.0 °C over a 0 to 70 °C range
  
• Power: 5 VDC, ±5%; 1 mA with no signal conditioning installed; 800 mA max from host computer
  
• Fuse Rating: 1.10 A, 8 VDC SMT PTC, fuse is not user-replaceable
  
• Dimensions: 5.8" W x 5.8" D x 1.2" H (14.7 × 14.7 × 3.0 cm)
  
• Weight: 1.41 lb (0.64 kg)
  
• I/O connector: 68-pin male SCSI connector
  
• Screw terminals: 68, all I/O signals are available at screw terminals
  
• Wire gauge: 14–30 AWG
  
• Operating Temperature: 0 to 70°C
  
• Storage Temperature: –20 to 70°C
  
• Relative humidity, operating: 5 to 90% RH, noncondensing
  
• Relative humidity, storage: 5 to 90% RH, noncondensing
  
• Pollution Degree: 2
  
• Maximum altitude: 6562 ft (2,000 m)