Stanford Research Systems LDC500, Operation And Service Manual

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Contents iii
4.4 Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 10
4.4.1
Connection example . . . . . . . . . . . . . . . 4 – 11
4.5 Commands . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 16
4.5.1
Command syntax . . . . . . . . . . . . . . . . . 4 – 16
4.5.2 Notation . . . . . . . . . . . . . . . . . . . . . . 4 – 17
4.5.3 Examples . . . . . . . . . . . . . . . . . . . . . 4 – 17
4.5.4 Laser limit commands . . . . . . . . . . . . . . 4 – 18
4.5.5 Laser setting commands . . . . . . . . . . . . . 4 – 20
4.5.6 Laser monitor commands . . . . . . . . . . . . 4 – 22
4.5.7 Laser configuration commands . . . . . . . . . 4 – 24
4.5.8 Laser trip-o
ff
commands . . . . . . . . . . . . . 4 – 29
4.5.9 TEC limit commands . . . . . . . . . . . . . . . 4 – 31
4.5.10 TEC setting commands . . . . . . . . . . . . . 4 – 33
4.5.11 TEC monitor commands . . . . . . . . . . . . . 4 – 35
4.5.12 TEC configuration commands . . . . . . . . . 4 – 36
4.5.13 TEC sensor commands . . . . . . . . . . . . . . 4 – 40
4.5.14 TEC trip-o
ff
commands . . . . . . . . . . . . . 4 – 45
4.5.15 Interface commands . . . . . . . . . . . . . . . 4 – 46
4.5.16 Status commands . . . . . . . . . . . . . . . . . 4 – 52
4.6 Status Model . . . . . . . . . . . . . . . . . . . . . . . . 4 – 57
4.6.1
Status byte (SB) . . . . . . . . . . . . . . . . . . 4 – 58
4.6.2 Service request enable (SRE) . . . . . . . . . . 4 – 59
4.6.3 Standard event status (ESR) . . . . . . . . . . . 4 – 59
4.6.4 Laser diode condition (LDCR) . . . . . . . . . 4 – 60
4.6.5 TEC controller condition (TECR) . . . . . . . . 4 – 61
5 Error Messages 5 – 1
5.1 Laser Diode Driver Messages . . . . . . . . . . . . . . 5 – 2
5.1.1
Interlock . . . . . . . . . . . . . . . . . . . . . . 5 – 2
5.1.2 Transitions with high photodiode current . . . 5 – 2
5.1.3 Transitions with limited laser current . . . . . 5 – 2
5.1.4 Transitions locked out . . . . . . . . . . . . . . 5 – 2
5.1.5 Responsivity . . . . . . . . . . . . . . . . . . . 5 – 3
5.1.6 Photodiode current overflow . . . . . . . . . . 5 – 3
5.1.7 Responsivity underflow . . . . . . . . . . . . . 5 – 3
5.1.8 Responsivity overflow . . . . . . . . . . . . . . 5 – 4
5.1.9 Trip-o
ff
from TEC . . . . . . . . . . . . . . . . . 5 – 4
5.1.10 Trip-o
ff
from temperature . . . . . . . . . . . . 5 – 4
5.2 TEC Messages . . . . . . . . . . . . . . . . . . . . . . . 5 – 4
5.2.1
Autotune . . . . . . . . . . . . . . . . . . . . . . 5 – 4
5.2.2 No loop control . . . . . . . . . . . . . . . . . . 5 – 5
5.2.3 Transitions locked out . . . . . . . . . . . . . . 5 – 5
LDC500 Series Laser Diode Controllers