Originally Posted by Dan Keaton (Post 1651355)

Dear Friends,

The nanoFlash can operate in two modes:

E to E Direct which provides very low latency

and

Regular Mode which has multiple frames of delay (I believe 4 frames)

With Regular Mode (Video|E to E Direct unchecked), we process incomming analog audio and LTC timecode, and add it to the video before it goes out the HD-SDI and HDMI.

Thus for most users, E to E Diect option is appropriate. In this mode analog audio and timecode are added to the images being recorded, but there is not enough time to incorporate these signals into the very low latency outputs (HD-SDI and HDMI).




E to E Direct is also required to be active for our "On Screen Tally" to work.

Thus, E to E Direct is the recommended option for almost every situation.
But E to E Direct must be off if one is going to send the HD-SDI or HDMI signals to another recorder.


When E to E Direct is active, the latency is extremely low, approximately 1 microsecond or so.
The signals come in and are immediately sent back (but the signals are reclocked and repeated as would be expected in high level professional equipment).

While I know the "approximately 1 microsecond latency" applies for HD-SDI, I have not asked our engineers for the precise latency value for the HDMI output. It should be extremely low also.

I hope this helps.

Originally Posted by Dan Keaton (Post 1651594)

Dear Robin,

As long as you do not to have the nanoFlash embed analog audio (via the Mic/Line 3.5mm audio input) and/or LTC timecode (via the remote control connector), the it is perfectly ok to use E to E Direct.

The video and audio latency will be very low if you use E to E Direct, thus this is a very desirable option to use.

It is also required to be on if you want the use the red on-screen tally.

The on-screen tally is very useful if you are using an external monitor.
(But not appropriate if you are sending the nanoFlashes HDMI or HD-SDI outputs to another recorder.)