EXFO MAX-860 - Page 321

Test Functions
MaxTester 313
100 Advanced - QSFP28 Control
 I2C - Read/Write
 I2C Address allows selecting the I2C address: 0x0000 (default) to
0x00FF.
 I2C Data allows either selecting (write) or reading the I2C data:
0x0000 (default) to 0x00FF
Read button reads the data of the specified I2C Address.
Write button writes the specified I2C DATA value to the specified
I2C Address.