Specifications

Radio Systems Millenium-D Digital Console Page 26

4.1.2 “TEL” Output

The “TEL” 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 “TEL” 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 “TEL” Output are identical to the program and audition out-

puts.

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 Monitor Output

J12 Dimmed Monitor (Mute 1)

J15 Muted Monitor (Mute 2)

J16 Unmuted Monitor

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.