10
| DMR HD3 User Manual 1.0
APRIL, 2015
Note: There is a +5V on the tip
This closure can be in the form of a relay, manual
switch or semi-conductor switch. This allows for relay
control via external control systems such as AMX,
Crestron, or by a plain momentary trigger, such as a
foot switch.
Semi-conductor closures are found on AMX or Crestron
controllers in the form of a D I/O port. If using a semi-
conductor closure, polarity is important. The phone
plug tip must be wired to the + or individual input of
the D I/O port, and the sleeve connected to the ground
or - connector. Note that, unlike relay connections,
these connections are not isolated and can form
grounding or hum loops.
On-Screen Menu/Front Control Panel
The On-Screen Menu is displayed on the DVI output of
the HD3. The HD3 IR remote or Front Control Panel
(keypad) will provide some of the configuration features
of the Web Portal as well as provide the ability to
navigate and playback non-password protected content
stored on the HD3.
Currently the on screen menus give the user the
following capabilities:
♦
Start/Stop Recording
♦
Browse and Play non-password protected
content
♦
Browse and Play recent content
♦
Burn content to optical disk
♦
Copy content to USB
♦
Set audio input recording level
♦
Adjust the Menu opacity, position and timeout
♦
Retrieve System Information
External Control
Telnet
The telnet client within the HD3 provides access to the
Command Line Interface through the TCP/IP protocol.
By default, TCP telnet is disabled but can be activated
from the Web Portal with an optional password. The
available commands are the same as listed in the RS-
232 section.
Once logged in, type ‘help’ or ‘?’ for a list of
commands.
Infra-Red
The Infra-Red (IR) receiver for the remote control is
located on the front of the HD3. It can also be used for
IR control via control systems such as AMX or Crestron.
Remote Contact Closure (Relay)
A relay contact closure connection is mounted on the
back as a 1/8th (3.5mm) phone plug. Either a mono or
stereo plug can be used, but in the case of the stereo
phone plug, short the sleeve to the ring as the negative
connection. This connection can be wired to a simple
momentary switch closure and will start or stop a
recording.
