Novatron 1000VR does not fire with V5

I picked up an old Novatron 1000VR set and modified the sync cable to connect into the V5's (basically I bought a household to miniphone adaptor). When I attach one to my Novatron box and one to my camera, the test button works great to fire the strobes. When I use my camera shutter, it does not fire them. If I remove the one receiver from the novatron and attach a regular speed light, it works just fine. What could be the issue.

The camera is an Olympus OMD EM1. 


  • My guess is that the Novatron has reversed polarity. If it's the case you will need to modify your sync cable. Please see the diagram below.

    Antonio Lao
    Brand Manager

    To help us better help you, always state the exact firmware version installed on your Cactus device(s), such as: "1.1.013", "FUJ.1.002", "NIK.A.001", "v.103".

    For the time being, Cactus V6 (MK1) running on firmware version 2.1.001 can be triggered by a V6 II (MK2) running on Multi-brand HSS firmware (e.g. 1.1.013) but not by X-TTL firmware versions:  PEN.A.001 NIK.A.001 OLY.A.001.  No schedule has been released yet for an "A" version firmware on the V6 (MK1). 

    Cactus RF60X / RF60 Firmware versions A04 and A03 currently ONLY works with PEN.A.001 NIK.A.001 and OLY.A.001.  Other "A" version of X-TTL firmware will be released soon. For both Multi-brand HSS and X-TTL firmware versions (FUJ, SIG, SON), install firmware version 103 / 205 on your RF60X / RF60.

    Nikon D750 users please read this thread: 

    Fujifilm EF-X500 users please read this thread:

    Feel free to suggest an improvement or share product ideas. Contact us directly at  At Cactus, we listen. 
  • edited June 2015
    It shouldn't be a case of reversed polarity since the cable works when the test button of the V5 is used. At least I'm assuming the test button on the transmitter V5 is being pressed when the setup is working.

    Is it possible that the trigger time generated by the camera is too short for the Novotron to pick it up?
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