Installation User guide

4-15

MLC 226 IP Series • Software-based Conﬁ guration and Control

PRELIMINARY

This feature addresses a problem that occurs with some projectors that use

range type volume control. When the MLC’s knob controls projector volume,

sometimes the MLC sends the volume commands faster than the projector can

detect and process them. The projector does not detect some of the volume

change commands, resulting in a choppy volume ramp.

Encoder scaling gives the programmer the ability to slow the knob down to a

speed the projector can handle. The drawback is that users must turn the knob

more times to change from minimum to maximum volume. It is up to the user

to ﬁ nd a balance between smooth audio ramping and the number of knob turns

needed to cover the volume range. This requires trial and error for each projector

exhibiting this problem.

Although this feature is mainly for range type volume control, it applies to any

range type command programmed to be executed by the volume knob.

Digital I/O port settings

Digital input/output port 1 consists of pin 1 and the ground pin of the rear panel

Host Control 15-pin HD connector.

For digital I/O port 1, you can

choose one of the four options

(shown at right) for how the port

will function. See pages 2-3 to 2-4

for details on wiring and using this

port.

Digital input port 2 consists of the power sense (Pwr Sns) pin and the Ground pin

of the bottom panel Display RS-232/IR port. Because these pins can be used either

for digital input or for power

sensing, you must use this setting

in Global Conﬁ gurator to select

between digital input and the

power sensor function. See pages

2-6 and 2-7 for details on wiring

and using this port.

Miscellaneous settings

In this area of the Advanced Configuration tab you can choose whether to reset

button statistics (which track how many times each front panel button is pressed)

when uploading the latest conﬁ guration ﬁ le, and/or whether to upload the

enhanced Web pages (which show

photo-like versions of the MLC’s

and control modules’ front panels)

when the conﬁ guration is

uploaded to the MLC.

For more information on button statistics, see “Statistics” on page 4-21. See

page 4-25 for examples of both basic and enhanced Web pages.