MagTek USB HID INTELLIHEAD - Manual (Page 25)

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SERIAL NUM PROPERTY
Property ID: 0x01
Property Type: String
Length: 0 – 15 bytes
Get Property: Yes
Set Property: Yes
Default Value: The default value is no string with a length of zero.
Description: The value is an ASCII string that represents the key’s serial number. This
string can be 0 – 15 bytes long. The value of this property, if any, will be sent
to the host when the host requests the USB string descriptor.
This property is stored in non-volatile memory, so it will persist when the unit
is power cycled. When this property is changed, the unit must be reset (see
Command Number 2) or power cycled to have these changes take effect.
Example Set Serial Num property Request (Hex):
Cmd Num Data Len Prp ID Prp Value
01 04 01 31 32 33
Example Set Serial Num property Response (Hex):
Result Code Data Len Data
00 00
Example Get Serial Num property Request (Hex):
Cmd Num Data Len Prp ID
00 01 01
Example Get Serial Num property Response (Hex):
Result Code Data Len Prp Value
00 03 31 32 33
POLLING INTERVAL PROPERTY
Property ID: 0x02
Property Type: Byte
Length: 1 byte
Get Property: Yes
Set Property: Yes
Default Value: 10
Description: The value is a byte that represents the devices polling interval for the Interrupt
In Endpoint. The value can be set in the range of 1 – 255 and has units of
milliseconds. The polling interval tells the host how often to poll the device
for card data packets. For example, if the polling interval is set to 10, the host
will poll the device for card data packets every 10ms. This property can be
used to speed up or slow down the time it takes to send card data to the host.
The trade-off is that speeding up the card data transfer rate increases the USB
bus bandwidth used by the device, and slowing down the card data transfer
rate decreases the USB bus bandwidth used by the device. The value of this