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© National Instruments Corporation 9 USB-6501 OEM User Guide
Power Requirements
USB
4.10 to 5.25 VDC............................ 80 mA typical, 500 mA max
USB Suspend .................................. 300 µA standby mode,
500 µAmax
Physical Characteristics
Dimensions ............................................ 5.74 cm × 6.73 cm × 1.15 cm
(2.26 in. × 2.65 in. × 0.45 in.)
I/O connectors ........................................ USB series B receptacle; 34-pin
IDC ribbon cable header
Weight.................................................... 21 g (.74 oz)
Safety
Standards
The USB-6501 is designed to meet the requirements of the following
standards of safety for electrical equipment for measurement, control,
and laboratory use:
• IEC 61010-1, EN 61010-1
• UL 61010-1
• CAN/CSA-C22.2 No. 61010-1
Note For UL and other safety certifications, refer to the product label, or visit
ni.com/certification, search by model number or product line, and click the
appropriate link in the Certification column.
Overvoltage Protection
Connect only voltages that are within these limits.
Channel-to-COM (one channel)............. ±30 V max,
Measurement Category I
Channels-to-COM
(one port, all channels)........................... ±8.9 V max,
Measurement Category I
Measurement Category I is for measurements performed on circuits not
directly connected to the electrical distribution system referred to as
MAINS voltage. MAINS is a hazardous live electrical supply system that
powers equipment. This category is for measurements of voltages from