THORLABS KURIOS-VB1, User Manual, Page: 28 / 39

Kurios
®
Liquid Crystal Tunable Filters Chapter 5: Operation
Page 24
CTN002811-D03
5.4.14. ST? – Filter Status
Queries the current status of the optical head.
Return:
ST=n
where n can be one of the following:
n=0: Initialization. The filter is in an initialization stage to transit from idle to operation state. This initialization period
takes 90sec from power up.
n=1: Warm up. The internal heater is providing heat to the optical elements in order to reach a target of 40°C, which
is the optimal operating temperature of the filter. While warming up, the filter is fully operational, except that the
passband wavelength might be shifted and the switching speed is slower.
n=2: Ready. The temperature of the optical elements has reached 40°C and the filter is fully operational and
performs as specified.
5.4.15. TP? – Filter Temperature
The TP? command queries the internal temperature of the KURIOS-VB1 optical head. The filter is designed to
operate at 40°C and there is a heating element within the optical head. This temperature can be monitored in real
time.
Return:
TP=n
where n is the current temperature in °C.
5.4.16. TO=n; TO? – Trigger Output Setting
The
TO
command sets or queries the trigger output operation mode. When
n=0
, the trigger output is in normal
operation mode (low during idle, high during wavelength switch). When
n=1
, the trigger output is flipped (high during
idle, low during wavelength switch).
TO=n
Sets the trigger output operation mode. Valid values of n is 0 (normal) or 1 (flipped).
TO?
Query the current trigger output operation mode.
Return:
TO=n
where
n=0
(normal) or
n=1
(flipped).
5.4.17. ET=1; Enforce Trigger Out
Supported in firmware version 3.1 or above, while filter is in external triggererd sequence mode, issuing ET=1
causes the filter to advance one step ahead, regardless of the current trigger in signal. This can be regarded as a
software trigger when hardware trigger is not available.