Owner`s manual

I/O Port Connector (8P8C modular)
The I/O Port provides a System-Active signal output (+5V when any zone on) for amplifier triggering, and a Page-Activate input for
activating/deactivating a paging/doorchime mode.
Pin Vaux I/O Port Signal Direction Use Std Colors (note 3)
1 TX-T — (reserved) Wht/Orn
2 TX-R — (reserved) Orn/Wht
3 RX-T — (reserved) Wht/Grn
4 SYS_ACTIVE_OUT -> Amplifier Enable (note 1) Blu/Wht
5 GROUND — Signal Ground Wht/Blu
6 RX-R — (reserved) Grn/Wht
7 5V_OUT -> 5VDC (20 mA max) Wht/Brn
8 PAGE_PB_IN <- Activate Page Mode (note 2) Brn/Wht
1) SYS_ACTIVE_OUT (with respect to GROUND) is 0VDC when all zones are off, and +5VDC (20 mA max) when any zone
is on or muted. This can be used to enable a multichannel power amp which has a compatible DC activation input.
2) The PAGE_PB_IN connection is for activating the paging feature, when enabled (*PW,230). When this line is open, the
system operates normally. If a pushbutton (or relay contact) connects PAGE_PB_IN to 5V_OUT, system paging mode is
activated. Normal mode resumes when the pushbutton is opened. If this signal is not enabled for page-mode use, change-of-
signal-state messages (!S,180) are sent – this allows the control system to use this signal as a digital input.
3) Standard colors apply when using a CAT-5 UTP cable, crimped to an 8P8C modular plug according to the EIA-568B spec.
(many, but not all, ethernet patch cables use this convention; some use the less-common 568A spec, which is electrically
identical but swaps the colors of 2 pairs, just to make life miserable for installers)
Ctrl-In/Ctrl-Out Port Connectors (6P6C modular)
To daisy-chain multiple switchers, short (1-ft) modular cables interconnect the units using the Ctrl-In and Ctrl-Out ports. These daisy-
chain 6P6C modular cables are wired for straight-through connections, and are available from Vaux under part number CBL-8. You
cannot use two or four conductor telco cords, nor can you use a reverse-wired cable.
The main control system connections are made to the Control port and/or the IR-In port on the first switcher, and a daisy-chain cable
connects from the Ctrl-Out port on this first switcher, to the Ctrl-In port of the next switcher (then from Ctrl-Out of the second unit...).
Any number of switchers may connect in this fashion to provide two-way RS-232 control, and one-way IR control, of all switchers in
the daisy-chain.
Ribbon-Expansion Connectors (34-cond)
Some Vaux audio switchers may be ordered (-RE suffix) with the optional ribbon-expansion connector(s). These are used to parallel
the stereo audio input sources and eliminate the need for Y-cables or distribution amps. The audio sources connect to the phono
connectors on the lowest chassis in the rack, and the ribbon cable(s) run vertically to connect from two to ten switchers together
(additionally, you will want to interconnect these units with modular control daisy-chain cables, as described above).
Each of the 34-conductor ribbon cables supports eight stereo audio sources. Lattis LE-800A-RE and LE-800AV-RE switchers have a
single ribbon connector, while the LE-1600A-RE has two ribbon connectors. You can, of course, mix switchers – eg: connecting an
LE-800AV-RE to and LE-1600A-RE with a single ribbon cable, for the first eight sources.
Lattis Matrix Switcher 45 Software Version 7.3.0.0