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Gemini System

Interface Boards

A complete range of interface boards further extend the functionality of the Gemini system, allowing connection to conventional control panels and third party systems via:

  • CAT5.
  • Analogue 4-wire audio equipment.
  • Analogue telephone lines.
  • AES/MADI streams.
  • IP enabled panels from Trilogy.

These boards also carry all inter-matrix messaging and system configuration data between Gemini units and other connected systems. Although normally connected to a master database on the network, each Gemini frame can store up to 4 configurations and is therefore not reliant on connection to a central server. The Gemini system is normally deployed as a simple control interface to other equipment, but the in-built GPI capability allows external control access to an extensive array of audio routing and logic functions for maximum integration.


The flexible, modular nature of the Gemini system supports a wide range of potential applications. This is what a typical configuration looks like:


Ports and IO

Number of Ports

8 – 32 per Gemini matrix, depending on configuration

Camera Mix/DA

6 channel, 4 wire

Front Panel Headset

XLR5 socket. Microphone type: dynamic.

Gemini Network

Up to 8 matrices per ring, giving a maximum of 512 ports

IP Channels

32 channels when DSP option is fitted

GPI – Inputs (per matrix) / GPI – Outputs (per matrix)

16 closure to ground / 16 opto-isolated



Audio Performance

Port Type

4 wire electronically balanced

Frequency Response

-3 dB @ 20 Hz and 20 kHz

Input Gain Control

+12 dBu to -12 dBu (1db step resolution) via Gateway

Output Gain Control

+12 dBu to -40dBu (1db step resolution) via Gateway

Maximum Input Level / Maximum Output Level

+20 dBu / +20 dBu


< –95 dBu @ 1 kHz


< –62 dBu ITU-R-468 weighted / < –69 dBu ITU-R-468 unweighted


< 0.025%, 0 dBu at 1 kHz

Input Impedance / Output Impedance

24 k Ohm / 50 Ohm

Sample Rate

48 kHz



HSL Data Rate

270 Mb/s

Audio Delay

1.2 ms (typical)

Maximum Cable Run

100 m between Gemini matrices




483(w) x 89(h) x 375(d) mm (19 inch x 2RU)

Operating Temperature

0°C to +50°C



EN 55024:2010/CISPR 24:1997


EN 55022:2006 inc A1:2007 & A2:2010

EN 55022:2010

FCC/CFR 47: Part 15:2013

Canadian Standard ICES-003:Issue 5


CAN/CSA C22.2 No.60950-1-07 + Amd 1:2011

ANSI/UL 60950-1-2011


EN 60950-1:2006 inc A12:2011

IEC 60950-1:2005 (Second Edition) + Am 1:2009

Power (single or optional dual)

100/240 V ac, 1.8A, 50/60 Hz

Power Consumption

< 65 W



To view Brochures and Datasheets, visit the Product Datasheet page.
To view User Guides, visit the User Guides page.