Other Settings Slide-Out Menu; Cache Settings Page - AMX NXD-1200VG Operation/Reference Manual

Firmware Pages and Descriptions

Other Settings Slide-Out Menu

Pressing the Other Settings button causes an option men to slide outwards from the Protected Setup buttons (FIG. 122).
This option menu contains buttons to access the Cache Settings and Password Settings pages. Select any button to open
its page.
FIG. 122 Other Settings slide-out menu

Cache Settings Page

The Cache Settings page (FIG. 123) configures the allocation of memory for image caching. The G4 graphics engine
caches images to decrease load time of previously viewed images. RAM caching is always enabled, and images (both
static and dynamic) are stored in the RAM cache as they are viewed. The size of RAM cache is automatically configured
to take into account available memory versus memory that may be needed by the panel later. As the RAM cache
approaches its maximum size, the oldest items in the cache may be discarded to make room for newer items. If Flash
caching is enabled, dynamic images that would have been discarded will be moved to Flash, since it is typically faster to
retrieve images on Flash than across a network (although it is slower than RAM cache). Note that since static images are
already stored on Flash, they are never moved to the Flash cache, so Flash caching applies only to dynamic images.
Images in Flash cache are moved back to RAM cache the next time they are viewed. As the Flash cache approaches its
maximum size, the least recently used items may be discarded to make room for new items.
Flash memory may be allocated for image caching, but RAM cache is always enabled. Flash memory is a secondary
cache and is much slower than RAM cache, as it uses Compact Flash to store images. Flash memory should not be used
frequently, but it may be appropriate to use Flash memory in some environments that are dynamic image intensive, at
times when RAM cache is easily exhausted and the time taken to access Flash memory would be faster than network
latency.
For example, when large dynamic images are being used over slow wireless links, putting the images into Flash memory
can help the situation, as the panel could spend more resources processing information rather than continuously waiting
on images to arrive from a slow network.
FIG. 123 Cache Settings page
The elements on this page include:
142 VG Series Modero Touch Panels