Micro-Gemini-2: miniature video link expander module for surveillance applications
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micro-Gemini-2 Video Link Expander

micro-Gemini-2 is the simplest way to add an extra camera to ultra-covert surveillance links and retains all the key features of the standard Gemini range including full colour operation, fast update rate, on-screen display and by-pass on power-down.

micro-Gemini-2 is a miniature video link expander that is easy to conceal when carrying out highly covert surveillance. This unique device is simple to operate and install and offers more discretion when size, weight and low power consumption are prime considerations.


The micro-Gemini-2 encoder combines two independent video inputs together to give a single field-multiplexed output, which is compatible with most real-time video links, including coax, fibre optic, analogue wireless and even some digital wireless links. At the receive site, the signal is decoded back onto two separate outputs by a micro-Gemini-2 or standard Gemini-2 /4 decoder.


micro-Gemini-2 Typical Application Diagram


Micro-Gemini-2 Application Diagram


micro-Gemini-2 Dimensions and Interfaces


Micro-Gemini-2 Dimensions-Interfaces


Micro-Gemini-2 Side on
Micro-Gemini-2 Side On
(click on photo for more pictures)


micro-Gemini-2 Specification

Outline Specifications:
Operating temperature range -10 to + 55 deg C
Mechanical size (housed) 67 x 43 x 7.5 mm
Finish Black hard-anodised aluminium
Weight (housed) 35 g
DC power 6 to 25 V DC
Typical current consumption <1.6 W, 130mA@12V typ.
Compatibility Gemini-2 or Gemini-4
On-screen display Camera number/status dot
Lock-in time  <1 second
I/O connector 10 way 1.25 mm SIL Molex
EMC compliance EN5502 class A
FCC part 15B class A
Number of channels Encoder: 2 in, 1 out
Decoder: 1 in, 2 out
Multiplex method  Field sequential, no gen-lock required
Video standards supported PAL or NTSC (auto switching)
Video input / output 1 Vpp into 75R, + 10%
Picture update-rate 25 (PAL) or 30 (NTSC) fields per second per camera
Maximum delay (video in to out) 60 mS
Synchronisation line PAL:21/334 PAL, NTSC:21/284 or active lines 24/337, 22/285
Operation with one valid input Non-multiplexed


Product Codes

Product Code
MG2B-5317 micro-Gemini-2, miniature two way video link expander (multiplexer / demultiplexer pair)






Due to continual product development Ovation Systems reserve the right to change specifications without notice. E&OE.