Vivotek SUPREME SD9364-EHL User Manual page 311

VIVOTEK
400 Bad Request
415 Unsupported Media Type
8.21 RemoteFocus
(capability_image_c<0~(n-1)>_remotefocus=1)
Note: This request requires Administrator privileges.
Method: GET/POST
Syntax:
http://<servername>/cgi-bin/admin/remotefocus.cgi?function=<value>[&direction=<value>]
[&position=<value>][&steps=<value>][&iris]
PARAMETER VALUE
311 - User's Manual
Request is rejected because some parameter values are illegal.
Returned, if forcechk appears,when minsft is not achievable or the timeshift
feature of the target stream is not enabled.
DESCRIPTION