From e4996fed92b2bddd63a1cb2f5feba1c53e907293 Mon Sep 17 00:00:00 2001 From: Sebastien Bourdeauducq Date: Wed, 13 Jan 2016 14:38:22 -0700 Subject: [PATCH] manual/thorlabs_tcube: add note about USB/power sequencing --- doc/manual/ndsp_reference.rst | 3 +++ 1 file changed, 3 insertions(+) diff --git a/doc/manual/ndsp_reference.rst b/doc/manual/ndsp_reference.rst index 5dcf96ae0..3c41d7287 100644 --- a/doc/manual/ndsp_reference.rst +++ b/doc/manual/ndsp_reference.rst @@ -88,6 +88,9 @@ Controller Thorlabs T-Cube --------------- +.. note:: + When power is applied before the USB connection, some devices will enter a state where they fail to report the completion of commands. When using the ARTIQ controller, this cause certain function calls to never return and freeze the controller. To prevent this, connect USB first and then power up the device. When a device has entered the problematic state, power-cycling it while keeping the USB connection active also resolves the problem. + TDC001 Driver +++++++++++++