HID Global Corporation VERICLASS ユーザーズマニュアル
veriCLASS Hardware Specification VP3500 Reader Board, 3500-906
3
Power Considerations
A single voltage through the USB or serial interface connector supplies the VP3500A00. Supported
is a voltage range from 3VDC to 5VDC (only through serial interface).
is a voltage range from 3VDC to 5VDC (only through serial interface).
Note: Use only one of these two options at a time. If using USB as the host interface, use VUSB to
supply the board to ensure correct enumeration.
supply the board to ensure correct enumeration.
The VP3500A00 power consumption depends on the power consumption of the antenna. Metal or
ferrite material within the proximity of the board affects the power consumption.
ferrite material within the proximity of the board affects the power consumption.
Table 2: Power Consumptions for different Operation Modes
Operation Mode
Vin
Typ
Unit
3V 450
Reader polling for cards; no contact card inserted
5V 220
mA
3V 750
Constant carrier on; no contact card inserted
5V 370
mA
3V 240
Carrier off; no contact card inserted
5V 125
mA
3V 165
RF Interface turned off; no contact card inserted
5V 100
mA
3V 125
RF interface and contact card interface turned off
5V 75
mA
March 2011
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