User guide

28
INSTALLATIONCONFIGURATIONOPERATION
FURTHER
INFORMATION
INDEX
Output type (continued)
Typical outputs are:
{“ad”:”1”,”ln”:”hs”}, - not in use
{“ad”:”1”,”ln”:”hl”,”rx”:”ng”,”sw”:”1”,“t”:”’},
- connected to input 1 - all good.
{“ad”:”1”,”ln”:”hl”,”rx”:”nr”,”sw”:”1”,”t”:”HEDS”},
- connected to input 1 not displaying signal. No Hotplug, EDID, signal or display detected.
Cable unplugged.
{“ad”:”1”,”ln”:”hl”,”rx”:”nr”,”sw”:”1”,”t”:”S”},
- connected to input 1 not displaying signal. No signal detected. Input on ALDV104T not
connected.
{“ad”:”1”,”ln”:”hl”,”rx”:”nr”,”sw”:”1”,”t”:”D”},
- connected to input 1 not displaying signal. Display not detected. Input source on display
not selected.
{“ad”:”1”,”ln”:”hl”,”rx”:”nr”,”sw”:”1”,”t”:”HEDS”,”nd”:”Del
l<br>Description of screen”},
- connected to input 1 not displaying signal. No Hotplug, EDID, signal or display detected.
Cable unplugged. Screen name is “Dell” and the descriptive text is “Description of
screen”.
{“ad”:”1”,”ln”:”hl”,”rx”:”nb”,”sw”:”1”},
- connected to input 1 not displaying signal as disabled
{“ad”:”1”,”ln”:”hr”,”rx”:”na”,”sw”:”1”},
- not connected to input 1 not displaying signal
Similarly for outputs 2,3,4.
Security
The ALDV104T implementation has security on its web interface, using HTTP Digest
Authentication (RFC 2617). This is enabled by default and can be disabled via the web
interface.
If security is enabled, the API needs to provide an Authorization header in requests,
otherwise the operations will fail and return a 401 Unauthorized error.
Digest authentication uses a challenge response model. A request sent without an
Authorization header will receive a 401 response with a WWW-Authenticate header.
The parameters are extracted from this and used along with the username, password
and request URI to generate the response placed in the Authorization header of the API
requests.
The status operation can be performed without the need for authentication, only the
commands sent to /cgi-bin/api need authentication.