2
Contents
1Introduction.......................................................................................... 3
1.1 Hyperion...................................................................................... 3
1.2 Hyperion highlights...................................................................... 3
1.3 Standards.................................................................................... 4
2Interfaces............................................................................................. 5
2.1 USB interface.............................................................................. 5
2.2 RS232 interface .......................................................................... 5
2.3 Trigger in/out............................................................................... 6
2.4 Power connections...................................................................... 6
3Communications protocol.................................................................... 7
3.1 USB............................................................................................. 7
3.2 RS232 ......................................................................................... 7
4Device drivers...................................................................................... 8
4.1 USB............................................................................................. 8
4.2 RS232 ......................................................................................... 8
5Command set description ................................................................... 9
5.1 Commands.................................................................................. 9
5.2 Command structure..................................................................... 9
5.3 System commands...................................................................... 9
5.4 Configuration commands.......................................................... 10
5.5 White point references ..............................................................11
5.6 Measurement commands.......................................................... 12
5.7 User EEPROM commands .......................................................13
5.8 Returned results........................................................................15
6Measurement example...................................................................... 16
7Auto-ranging...................................................................................... 17
7.1 Introduction................................................................................ 17
7.2 How auto-ranging works ...........................................................17
7.3 Auto-range parameters ............................................................. 18
7.4 Auto-range in practice...............................................................18
7.5 Programming Hyperion for auto-ranging................................... 19
7.6 Auto-ranging recommendations................................................19
8Hyperion formulas............................................................................. 20
8.1 Formulas ................................................................................... 20
8.2 XYZ to Yxy conversion..............................................................20
8.3 XYZ to CIE 1976 UCS Yu’v’...................................................... 20
8.4 Flicker calculation...................................................................... 21
8.5 Additional colour spaces ........................................................... 23
9Operating mode.................................................................................24
10 Typical spectral sensitivity............................................................. 24
