Program.3 (Formerly "Tel") Output; External Monitor And Headphone Inputs; Headphone Outputs; Monitor Sends - Radio Systems Millenium-D Installation And Operation Manual

Radio Systems Millenium-D Digital Console
4.1.2

PROGRAM.3 (formerly "TEL") Output

The PROGRAM.3 output is connected via a five pin screw type barrier strip or RJ-45 connector labeled "TEL" on
header J33, on the Output Board.
The two "PROGRAM.3" Outputs provided are in parallel, from the same amplifier. The combined load on the amplifier
from both mono sends should be no less than 600 ohms.
In other aspects, the performance and connections to the "PROGRAM.3" Output are identical to the PROGRAM.1 and
PROGRAM.2 outputs.
4.1.3

External Monitor and Headphone Inputs

Four balanced, stereo, high impedance (4.7K ohm) inputs are provided which feed both the headphone and the moni-
tor amplifiers. These inputs are connected to headers J19 (external input 1), J20 (external input 2), J25 (external input
3), and J26 (external input 4) on the Output Board. Connections are made via five position screw type barrier strips or
RJ-45 connectors that are mounted onto the headers.
When wiring the 5-pin connectors, two conductor shielded cable with a foil shield around each conductor should be
used.
These inputs are intended mainly for air signal monitors, or for the connecting of other external monitor sources. Input
level trims for each of these inputs are provided on the Analog Output Board.
4.1.4

Headphone Outputs

Two headphone outputs are provided. The first is available at a stereo, quarter inch, phone jack which is factory
mounted to the front panel. This output is capable of driving 8 ohm or greater loads. D0 NOT USE MONO HEAD-
PHONES. The output signal is selected by the front panel headphone or monitor switches and level adjusted by the
front panel headphone level control.
The second headphone output is stereo, balanced, and high level (lv RMS typical). It will drive loads of 2K ohms or
greater. This output, which is intended for connection to an external headphone amplifier, follows the input selection
switches but is not affected by the front panel headphone level control.
Connections are made via a five position screw type barrier strip or RJ-45 connectors on Headphone header J11 on
the Analog output Board.
Single conductor shielded cable or two conductor shielded cable with a foil shield around both conductors should be
used.
4.1.5

Monitor Sends

Three stereo, balanced, high level (lv RMS typical) are provided. Each output will drive loads of 2K ohms or greater.
The outputs are dimmed.
Monitor (controlled by Mute 1), Muted Monitor (controlled by Mute 2), and Unmuted Monitor. All outputs follow the mon-
itor selection switches but only the Dimmed Monitor is affected by the front panel monitor level control. Connections are
made via five position screw type barrier strips or RJ-45 connectors that are mounted onto the monitor headers on the
Output Board as follows.
Output Board Header
J12
J15
J16
When wiring the 5-pin connectors, single conductor shielded cable or two conductor shielded cable with a foil shield
around both conductors should be used.
All monitor outputs are intended to drive external monitor amplifiers. The Dimmed Output, controlled by Mute 1, (which
also mutes the Cue speaker) is intended to feed the control room monitor amplifier where the console is located. When
the Mute 1 bus is enabled, the output from the Dimmed Output will be reduced to a level set by VR13 located on the
Output Board. This level may be set to maximize (for full muting) or, alternatively, to a level just below the feedback
threshold of the speakers.
Monitor Output
Dimmed Monitor (Mute 1)
Muted Monitor (Mute 2)
Unmuted Monitor
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