Owner`s manual

dB/100-ms rate, and return a status message only when ramping is stopped. This method is the easiest to implement since commands

are simply sent for button-press/release actions, and RS-232 traffic is minimized. However, if you wish to implement a bargraph

display, you will need to update this with a timer in your program (since there are no per-step messages).

eg: button-pressed > start ramp up/down > delay 100 ms > update bagraph 2-dB if button still pressed... > stop ramping when released

Preset States and Paging/Doorchime features

Vaux Lattis switchers have Preset and Paging modes of operation which allow an entire chain of a/v switchers to quickly re-configure

using single commands. The switchers have seven programmable States which can each be programmed for a specific combination of

a/v routes, volume levels, etc, using any or all of the zones.

For example, a state may be Recalled for use as a Preset, such as a party mode, boardroom mode, etc. Or, a state may define the zones

and volume levels for Paging from telephone-system, doorchime, or other sources.

Normal Operation

The switchers are usually in State-0, which is initialized to all-zones-off when the switchers power-on. If you never use any of the state

features, you simply stay in this Normal mode – in this mode, routes and other changes all occur in State-0.

Preset-Recall Mode

Any of the states 1 through 7 may be programmed as a Preset for a specific use, and then recalled when needed. When a Preset (state

1 to 7) is recalled, it is copied to the Normal state-0. Since state-0 it is cleared at power-up, and changed when a new Preset is

recalled, it is volatile. States 1 to 7 are stored in non-volatile memory and remain when the switcher is powered off – they are not

changed unless you explicitly alter or clear them. Each State stores the a/v route information for each zone, left and right volumes for

each zone, zone a/v status (on/off/muted), and unmute volumes for each zone.

For example, you may have certain sources routed to various zones at specific volume levels (zones can even be muted), for a house

party preset, or a boardroom or courtroom application. Recalling presets will change routes and volumes on all zones, with one simple

command.

Each of these Presets store a completely different configuration of the machine, and since they are recalled (copied) into state-0, the

presets are not changed if you subsequently change routes, volumes, etc. However, previous routes on all zones in state-0 are lost

(unlike a page, where the previous state is restored).

The Preset-Recall command (*CW,92,bzn,0,0,pst,msg,tpr) copies the preset-state pst (1 to 7) to state-0. The msg parameter allows

you to enable individual zone-route messages if desired, and tpr selects either normal routing (with volume tapering), or fast routing

(no tapering). Using the bzn parameter, you may direct the command to a switcher at a specific Base-Zone, or to all switchers on the

daisy chain. A Preset-Recalled message (!S,92,bzn,swt,0,pst) is returned, and individual zone route messages (!S,1/2/3) may also be

returned.

Note: If this command is issued when you are NOT currently in state-0 (see dynamic-mode, below), the switcher will be placed in

state-0, and the preset then recalled. This command will also terminate any paging command in progress.

Lattis Matrix Switcher 20 Software Version 7.3.0.0

State-

Preset-

Recall

Mode

recall-cmd

State-

recall-cmd