Cloud-electronics Z4ii Manual de usuario descargar pdf (Pagina 20)

Z4II & Z8II Installation and User Manual v1.020

Music source

Music source for a zone may be controlled by applying

various DC voltages of between 0 and +10 V to pin 3, the

0 V reference being connected to pin 1. 0 V at pin 3 will

select Line input 6 and between +7.5 and +9 V will select

Line input 1. The other line inputs will be selected with

intermediate voltages. Taking pin 3 above +9 V will deselect

all inputs, making the zone effectively ‘off’ for music.

The table below lists the DC voltages required at pin 3 to

select each line input. The third column is the value of a

resistor which should be connected between pins 1 and 3

to permanently ‘force’ a zone to a particular line input.

INPUT DC VOLTAGE RESISTOR VALUE

OFF >+9.0 V

Line 1 +7.5 V 16k

Line 2 +6.0 V 11k

Line 3 +4.5 V 6k8

Line 4 +3.0 V 3k9

Line 5 +1.5 V 1k8

Line 6 0 V short-circuit

Note that there is an internal 15k “pull-up” resistor

between pin 3 and the internal +15 V rail. If pin 3 is left

“oating”, this pull-up will cause ‘OFF’ to be selected. The

output impedance of the control voltage source should be

low enough to overcome the effect of this resistor.

Fitting Bose® Series II EQ cards

The Z4II and Z8II are compatible with Bose® Series II

loudspeakers; a single-channel Bose® equalisation module

may be tted to as many Zone outputs as necessary.

Equalisation modules for the following Bose® models are

available:

• Panaray MA12

• Panaray 402-II, 502B and 502BEX

• Panaray LT Series: Models 3302, 4402, 9402 and 9702

Other modules are available; please enquire.

To install equalisation modules, rst remove the top cover

from the Z4II/Z8II (6 screws). The modules plug into the

white 12-pin connectors labelled CON2 on the vertically-

mounted sub-cards; there is one sub-card for each zone

output. Note the header connectors on the PCB have two

notches on one side only; these engage with lugs on the

equalisation module’s mating connector to ensure correct

orientation.

See the Appendix section “PCB jumper locations and

settings” page 23 for further details. Replace the top cover

with the original screws after tting.

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