RL4 - Monitor Module

This module provides Oscillator, Communications and Monitoring functions.

Oscillator - The three-frequency Oscillator has outputs at 100Hz, 1kHz and 10kHz with either preset or adjustable levels. When none of the frequency switches are pressed, the Oscillator has no output. When both are pressed, output is at 1kHz; the other frequencies are selected from the individual switches.

CAL mode provides a fixed output at 0VU = +4dB which may be adjusted using the Trimmer if other operating levels are required; when not using CAL, level can be adjusted using the Osc Level control.

The Oscillator output may be selected to the Talkback routing system by pressing Osc Enable. A separate balanced output is also provided.

Communications - An interface is provided for an external 3-wire Comms. system, access being made using the Call switch. Connection is made using an XLR on the rear panel of the console.

An XLR input connector is located on the module front panel for a dynamic Talkback microphone. Mic gain is adjustable from +10 to +60dB using the Mic gain control.

The Comms Null preset allows cancellation of the operator's microphone output in his own headset.

The Talkback (and/or Oscillator) may be routed to the Stereo Bus, Groups, Matrix and Bus via the appropriate Comms Routing selector switch. The Talk switch sends the signal to the required output. The Communications signal may also be routed to the headphone amplifier by pressing Comms To Phones.

Meter Input Selection - 8 LED meters are sourced from the RL2 Group modules. Inputs to these meters can be selected using two source selector switches labelled 1 TO 8. Input sources include the Subgroup output; the Matrix output; the Aux Send outputs; and the 8 Returns.

Separate switches allow the Left-Right meter ballistic to be selected to either PEAK or VU mode.and to be sourced from the PFL signal instead of the selected Monitor A source.

Solo System - Recall RN has both PFL/AFL and Solo In Place modes.

Solo In Place - is enabled via the Solo In Place switch and uses the channel SEL switch to activate the solo. Solo In Place mutes all other channels except the channel selected to Solo.

Solo Defeat - prevents the selected channel from being muted when a Solo is selected. Channels can be set to Solo Defeat mode as required.
Pressing a SEL switch on a VCA Master fader will solo the whole VCA group.

A PFL/AFL Level control is fitted allowing overall adjustment of level to the monitor system. The AFL signal is stereo and the PFL signal comes to the Left and Right sides equally. The PFL/AFL bus may be selected to the monitor meters.

The basic operating mode for all PFL and AFL switches is momentary. Two additional modes may be selected:

INTERLOCK, which makes each PFL/AFL switch exclusive so that when it is pressed, any other PFL/AFL switch currently selected is cancelled, and
LATCH, which makes each PFL/AFL switch latch when pressed, allowing all selected PFL/AFL switches to mix together.

Clear - deselects all PFL/AFL switches.

Monitor Systems - Two similar but independent monitor paths, denoted A and B, are provided. These multi-source outputs can be used for various applications, such as recording, extra stereo output feeds, etc.
Each path can select from four sources - External stereo inputs 1-3 and the Stereo mix.
Each path has its own Level control, Mono and mute switches.

Monitor A - is the primary path as it also feeds the headphone amplifier and accepts the PFL/AFL signal. A Dim switch, which lowers monitor level by 20dB, is also fitted.

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