SupaSlim MK III

To convert any RS232C SupaSlim Filter Wheel for USB operation you will need the upgrade kit shown above. This consists of a fully wired and tested electronics assembly, plus the USB in-line converter. The electronics assembly is very easy to install, requiring just six screws for attaching to the filter wheel. In the above image, J shows the USB connection, which is via a 3.5mm 'stereo' jack socket. The socket for the hand unit, S, is now an RJ4/4 socket (previously RJ6/6), and the power socket, P, is a 2.1mm power jack, the same as before. The lightweight kit can be mailed in a standard Jiffy Bag. No driver software will be sent with the kit, as this is available as a zip download from this website (see below or USB main page), or we can send you this if preferred as an e-mail attachment.

1a. Make sure that there is no power applied to your filter wheel and that the serial cable is disconnected

1b. Remove the internal disk and store in the disk case or a safe place. Close the wheel housing even though there is no disk installed - it is easier to do the removal/installation with the catch closed.

1c. Unscrew the two panel retaining screws 'A' and keep panel and screws in a safe place. Make sure you keep all the screws you undo as none are supplied with the USB upgrade kit. Note also that the plastic panel has been skimmed inside the lower edge in order to sit flush on the RJ and power connectors (it will be obvious when you look at it, but make sure when you replace this panel, or the panel on the USB kit, that the skimmed edge is over the connectors)

1d. Unscrew the two fixing screws 'B' which hold the electronics card, together with the plastic enclosure, to the body of the SupaSlim

1e. Undo the two screws 'C' which fix the motor to the side panel. Note that these screws are very short so do not lose them!

1f. Turn the wheel over and undo the screws 'D' which fix the IR transmitters to the SupaSlim body.

Now that is all that is required to remove the RS232 electronic assembly. Please note that if you return this assembly to True Technology you will get a refund as detailed in the ordering section

2a.    Before you install the USB assembly, first you must slacken off the spring plunger. Although this is probably set correctly already, it does no harm to check it, it makes adjustment of the motor easier, and it is simple to reset it to the correct position (see later). Undo the lock-nut, then unscrew the spring plunger 'E' by at least two full turns.
                        Install the USB assembly in the reverse order that you removed the RS232 assembly.
2b.    Firstly connect the IR panel using screws 'D'. Do the screws up firmly but do not overtighten.
2c.    Fit the motor using the small screws 'C'. Do not tighten the screws at this stage.
2d.    Attach the electronics box and card using screws 'B'. Do not overtighten.
2e.    Replace the plastic cover using screws 'A'. Make sure the skimmed edge is over the RJ and power connectors

SECTION 3
Adjustment of the catch, motor and spring plunger

3b. Slacken off slightly the two screws 'F' retaining the upper part of the catch. Do not touch the screws fixing the lower part. Push the upper part of the catch upwards in the direction of the arrows as far as it will go then partly tighten the screws. With a disk installed in the SupaSlim, engage the catch and pull the lever down till it pulls the upper part of the catch downwards (if the upper part does not move at all then you have done up the 'F' screws too tightly. When you have the lever at an angle of about 45 degrees (about half way closed beyond the position shown at right) then stop and do up the 'F' screws reasonably tightly. You should find that when you close the lever all the way the disk will not wobble but will rotate freely.

3c. Motor adjustment. Refer also to the image for 1e above. The up and down arrows signify that the motor can be moved to vary the mesh between the duracon pinion on the motor, and the large gear on the disk. If the mesh is too loose (left) the motor will chatter when run, or if too tight (right) then the disk may not turn. When there is a good mesh (centre), the motor position is correct and you can tighten the fixing screws. You can apply power and test that it runs OK without being too tight or too loose. I normally do this adjustment by firstly pushing the gears into full mesh (right),then moving the motor down a tiny amount, maybe less than a mm, before tightening the 'C' screws. Note that you do not need to have the spring plunger adjusted at this point

3. You can now do the final adjustment, that of the spring plunger. First make sure that the disk is at the home position by applying power. Remove the power plug when initialised but make sure you do not rotate the disk away from the home position. Gently screw in the spring plunger 'E' all the way until it just touches the disk (make sure that the lock-nut is undone sufficiently). Then unscrew the spring plunger by approximately 2/3 of a turn and lock in position. An important point for those of you who have more than one disk - do not make this adjustment using early production disks as we have increased the diameter of later disks by a very small amount (0.5mm radius). If you have a FW-502 disk then always use this as the disk for adjustment, otherwise use the latest disk that you purchased. There is plenty of travel on the ball of the spring plunger so it will accommodate all disk types

There are a number of options, but note that if you don't return your old RS232 electronic assembly to True Technology then you will not get the £25 credit:

Option 1. Obtain the USB assembly and USB inline converter direct from True Technology by mail order. This is the easiest way.

Postage: UK: recorded delivery included, Europe: signed for airmail add £ 3 , ROW: signed for airmail add £ 5

You can use the mailer 'jiffy bag' to return your RS232 electronic assembly. Your card will then be credited back £ 25 inc-VAT/£ 21.28 ex-VAT

Note that UK/EU prices include VAT at 17.5%. For ROW the £ 119 becomes £ 101.28 ex-VAT, total including postage £ 104.28

** Option 1 is probably the cheapest course, costing just £ 94 UK, £ 97 Europe and £ 83.00 ROW(ex-VAT) **

Obtain the items from your dealer. Check with your dealer first on price/availability.

Return your SupaSlim RS232 to either True Technology direct, or to your local dealer. Check first with your dealer to see if they can do the conversion for you.

A. Return postage is at your cost, and to return the item back to you after conversion will have postage added. Note that if you are outside of UK/EU zone then there may be customs issues on re-importation. You will get your credit for return of the RS232 assembly.

B. If returning to True Technology direct then we will only require the SupaSlim body with internal disk (no filters please). We will not require the power unit or any adapters or cables. You will get your credit for return of the RS232 assembly.

C. The return postage cost extra (compared to Option 1 above), will be UK £ 3, Europe £ 9 ROW £ 17.50