Fig. 8: Table of fuses required for Focusrite units

Focusrite Product	Fuse 230/220V AC	Fuse 115/100V AC
Red 1	T250mA anti-surge (Time lag)	T500mA anti-surge (Time lag)
Red 2	T250mA anti-surge (Time lag)	T500mA anti-surge (Time lag)
Red 3	T250mA anti-surge (Time lag)	T500mA anti-surge (Time lag)
Red 6	T250mA anti-surge (Time lag)	T500mA anti-surge (Time lag)
Red 7	T250mA anti-surge (Time lag)	T500mA anti-surge (Time lag)
Red 8	T250mA anti-surge (Time lag)	T500mA anti-surge (Time lag)
Blue 230	T250mA anti-surge (Time lag)	T500mA anti-surge (Time lag)
Blue 315	T250mA anti-surge (Time lag)	T500mA anti-surge (Time lag)
Blue 330	T250mA anti-surge (Time lag)	T500mA anti-surge (Time lag)
ISA215	T250mA anti-surge (Time lag)	T500mA anti-surge (Time lag)
ISA110LE	T160mA anti-surge (Time lag)	T315mA anti-surge (Time lag)
ISA430	T500mA anti-surge (Time lag)	T1.6A anti-surge (Time lag)
ISA220	T500mA anti-surge (Time lag)	T1.6A anti-surge (Time lag)
ISA428	T500mA anti-surge (Time lag)	T1A anti-surge (Time lag)
ISA430MKII	T500mA anti-surge (Time lag)	T1.6A anti-surge (Time lag)
VoiceMaster	T160mA anti-surge (Time lag)	T315mA anti-surge (Time lag)
ToneFactory	T160mA anti-surge (Time lag)	T315mA anti-surge (Time lag)
Compounder	T160mA anti-surge (Time lag)	T315mA anti-surge (Time lag)
MixMaster	T315mA anti-surge (Time lag)	T630mA anti-surge (Time lag)
Penta	T160mA anti-surge (Time lag)	T315mA anti-surge (Time lag)
TrakMaster	T160mA anti-surge (Time lag)	T315mA anti-surge (Time lag)
OctoPre	T315mA anti-surge (Time lag)	T630mA anti-surge (Time lag)
VoiceMaster Pro	T315mA anti-surge (Time lag)	T630mA anti-surge (Time lag)
TwinTrak Pro	T315mA anti-surge (Time lag)	T630mA anti-surge (Time lag)

Platinum A/D Card 'Jumpers'

The optional A/D card for installing into Platinum units has several 'jumpers' (small rectangular plastic clips), which have differing effects on the action of the converter when removed. On the diagram below, the jumper circled in BLUE changes the digital output between professional and consumer format. (This is only a feature on A/D cards for the Penta, TrakMaster, VM Pro and TT Pro - the MixMaster and OctoPre have designated outputs for AES/EBU.) Leaving it on results in a professional format digital output that can be connected to an AES/EBU input if the correct cable is used (RCA (phono) to XLR). Taking it off makes the digital output a standard consumer SPDIF format.

The four jumpers circled in RED change the level of 0dBFS, the 'full scale' level at which digital clipping occurs. These jumpers should be left on if the card is in use with a Penta but removed if in use with any other Platinum unit (TrakMaster/VM Pro/TT Pro). If left on with any of the three latter units, the clipping level will be 6dB down, which is unlikely to cause significant problems but may result in minor distortion if the signal is 'hot'.

Fig. 9: Platinum optional A/D card jumper specification



Jumper J1 changes the termination Z of the Ext word clock input from 75ohms to HiZ. This is should be done when 'daisy chaining' several devices together.

Pinout for OctoPre

To enable correct wiring of the Analogue and Digital outputs of the OctoPre, should you be making or modifying your own cables, here are the diagrams indicating the specifications and pinouts for both:

Fig. 10: Pinout for OctoPre's Digital o/p's

Fig. 11: Pinout for OctoPre's TASCAM 8 channel Balanced Analogue o/p