©2018
Rev 2.0
37
Hardware Registers
Device Information Parameters and Format
Not all the 8 bytes read back contain valid data. The following table shows the valid bytes of data
for each of the parameters.
Device
Parameter Name
Param
num
Data
type
Byte 7
Byte 6
Byte 5
Byte 4
Byte 3
Byte 2
Byte 1
Byte 0
INTERFACE
0
U32
Intrfce
Serial Number
REVISIONS
1
F32
Software revision
Firmware revision
DATES
2
U32
Mfg year
Month
Day
Cal year
Month
Day
Interface Information
The first 4 bytes contain the device serial number as an unsigned 32-bit integer. Byte [4] contains
the interface as represented in the following table.
Table 8. Interface ID
Bit Description
[0] PXI/PXIe
[1] USB
[2] SPI
[3] RS232
[7:4] Undefined
Revision Information
The first 4 bytes represent the hardware revision and the last 4 bytes represent the firmware
revision of the device. These 4 bytes encompass a 32-bit floating point number so the data needs
to be type casted from an unsigned 32-bit value to float value.
Date Information
The first 4 bytes represent the manufactured date and the last 4 bytes represent the last
calibration date. The date format is outlined in the following table.
Bit
Type
Description
[0]
U8
Day
[1]
U8
Month
[4:3]
U16
Year (i.e. 2016)