Logic signal detection probe Detector of highs and lows in voltage or relay contact signals for recording purposes. Basic Specifications

• Inputs 4 channels (common ground between this unit and the channels), digital and contact signal detection (can detect open-collector signals at contact input)
• Input resistance 1 M-ohm (when digital input is 0 to 5 V), at least 500 k-ohm (when digital input is 5 to 50 V)
• Pull-up resistance 2 k-ohm (contact input, when 5 to 50 V)
• Threshold level (at digital input) +1.4 V, +2.5 V, +4.0 V
• Detect resistance (at contact input) opens from 1.5 k-ohm/closes from 500 ohm, opens from 3.5 k-ohm/closes from 1.5 k-ohm, opens from 25 k-ohm/closes from 8 k-ohm
• Permissible response pulse width 100 ns or more
• Max. allowable input 0 to +50 V DC
• Dimensions, mass 62 mm(2.44 in)W × 94 mm(3.70 in)H × 20 mm(0.79 in)D, 150 g (5.3 oz)
• Input cord length: 30 cm(0.98 ft), Connection cord length: 1.5 m(4.92 ft)
• Accessories IC clip lead (1), Alligator clip lead (1), Carrying case (1)