Technical data

Specifications and Characteristics 6
U3401A User’s and Service Guide 93
Resistance
• Measurement method
• 2-wire Ohms
• Open-circuit voltage
• Limited to +6.0 VDC
• Zeroing error
• 0.05 Ω or less (excluding test lead resistances) in each range when Rel operation is used
• Input protection
• 500 V DC or AC RMS
• Response time
• Approximately 1.5 seconds for 5 MΩ and ranges below 5 MΩ.
Diode/Continuity
• Measurement method
• 0.83 mA ± 0.2% constant current source, open-circuit voltage limited to < 5 V
• Test current
• Approximately 0.5 mADC
• Open-circuit voltage
• Limited to < + .0 VDC
• Continuity threshold
• 10 Ω fixed
• Continuity level
• Approximately below +50 m VDC
• Audible tone
• Continuous beep for continuity and single tone for normal forward-biased diode or
semiconductor junction.
• Input protection
• 500 V DC or AC RMS
Table 6 - 9 Measurement specifications (continued)