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The Aquatica housing for the Canon T2i / 550D offer a large choice of connectors to take full advantages of all the various strobes strobes available on

the market today. Standard choice available are:

20066-NK:

Two Nikonos type manual connectors.

20066-OPT:

Two optical ﬁber connectors to accept two Sea & Sea elbow type cords or two straight type cord (INON).

20066-HYB

One Nikonos Manual connector and one Optical connector to accept either one Sea & Sea elbow type

cord or two staright standard optical cords.

20066-KM

One Ikelite manual type connector

Optional also are: S6 type connectors and available in the summer 2010, the Nikonos type 6 pins connectors

Depending on which strobe system you are using, you can mount the necessary shoes or brackets or Base Ball onto the threaded holes on the top of

the hand grips. Use of the Aquatica Technical Lighting Control Strobe Arm System is recommended.

There is also a 1/4"-20 threaded holes provided on the bottom of the housing that can be used for various mounting applications. For example, A mount-

ing tray could be ﬁtted on the bottom of the housing. As well a 1/4"-20 threaded hole on top of the front half of the housing

will accept an Aquatica bracket or Base Ball that can hold a small focus light or a strobe arm.

FOR OPTICAL CONNECTORS

The housing with optical connectors are supplied with adapter for typical straight cord used by INON and other strobe

manufacturers, and angled Sea & Sea type cords, select the desired connection and install on the optical port base,

tighten the set screw into place with the supplied hexagonal wrench.

In order to to use Opticall triggering, the built-in ﬂash of the camera need to be in the up position, this is done at time of

installation or by using the pop up button on the housing (key #11). at this stage it would be the right time to select the

proper sync mode that you want to use(rear, slow, etc.).

Note: it is advisable to turn the camera off when travelling to your dive site in order to avoid useless drain of the camera

and strobes the batteries. Field testing as shown that mixing different brands of strobes give unreliable result and should

be avoided. Also noteworthy is the fact that many strobe offer Optical triggering, but TTL is only available with thoses that offer S-TTL type of signal,

please check carefully with your dealer prior to purchasing your strobes to make sure that they are indeed able to provide true TTL exposure.

When using Optically triggered strobes do not to install the hot shoe on the camera (HYB version) as this hot shoe disengages the internal built-in ﬂash

of the camera and prevent this later from triggering. Always do a few test exposures once you ﬁnished setting up the strobes to conﬁrm that they are

functionning as expected

Internal switch board circuit:

Your Aquatica T2i / 550D Pro Digital housing might be supplied with two Nikonos type connectors which are in turn connected to a switch board circuit.

Optional Ikelite bulkheads connectors are also available.

When preparing the sync cord be sure to lubricate the O-ring on the sync cord's connector with a light coat of Aquatica O-ring lubricant, Also advisable is

to put a light coat of O-ring lubricant on the threads of this connector.

Your Canon Digital camera design does not allow ﬂashes to be connected directly to the camera and be used in eTTL unless they are original Canon

ﬂashes in third party housing with the required connector and cords.

On your housing you will ﬁnd two bulkhead connectors, the main and secondary connectors are wired through a switch board that will allow you to even-

tualy evolves as underwater strobes technology does in the future. By default your housing is delivered with the switch board set to full manual, if eTTL

exposure is desired then it can be made in either of two methods:

1) By using a single ﬂash from Canon or other brand (that is eTTL compatible with your camera) in a underwater

housing connected with a proper 6 pins TTL cord to a compatible 6 pins connectors on your Aquatica housing.

2) By using an external eTTL converter connected to a 6 pins connector on your Aquatica housing to which one or two

underwater strobes with compatible TTL cords are then connected to this converter, (check strobe and converter

manufacturer for compatibility).

Set up instruction for eTTL operation: Using the tip of a pen push the switches 1, 2, 3 & 4 to the ON (up) position,

this will activate the connections on your main 6 pins bulkhead connector allowing eTTL communication between the camera and the housed ﬂash or

eTTL converter.

Set up instruction for manual operation: All switches must be in the OFF (lower) position, in this case all eTTL connections are disabled and only the

ground and sync are left active, this will allow two underwater strobes or housed ﬂashes to be connected directly via the main and secondary bulkhead.

MOUNTING AND ATTACHING FLASHES

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