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5
Contents
1
2
3
4
Introduction.......................................................................................... 3
Command set description ................................................................... 8
5.1
Commands .................................................................................. 8
1.1
Cronus ......................................................................................... 3
5.2
Command structure ..................................................................... 8
1.2
Highlights ..................................................................................... 3
5.3
System commands ...................................................................... 9
1.3
Standards .................................................................................... 3
5.4
Configuration commands ............................................................ 9
Interfaces............................................................................................. 4
5.5
Measurement commands .......................................................... 11
2.1
USB interface .............................................................................. 4
5.6
User EEPROM commands ....................................................... 12
2.2
Ethernet interface ........................................................................ 4
5.7
Returned results ........................................................................ 16
2.3
RS232 interface .......................................................................... 4
6
Measurement example ...................................................................... 17
2.4
Trigger in/out ............................................................................... 5
7
Autoranging ....................................................................................... 18
2.5
Power connections ...................................................................... 5
7.1
Introduction ................................................................................ 18
Communications protocol .................................................................... 6
7.2
How autoranging works ............................................................. 18
3.1
USB ............................................................................................. 6
7.3
Autorange parameters .............................................................. 19
3.2
RS232 ......................................................................................... 6
7.4
Autorange in practice ................................................................ 19
3.3
Ethernet ....................................................................................... 6
7.5
Programming Cronus for autoranging ....................................... 20
Device drivers...................................................................................... 7
7.6
Autoranging recommendations ................................................. 20
4.1
USB ............................................................................................. 7
8
Cronus measurement results ............................................................ 21
4.2
RS232 ......................................................................................... 7
9
Operating modes & triggering ........................................................... 21
4.3
Ethernet ....................................................................................... 7
10
2
Typical spectral sensitivity of colorimeter ...................................... 21