Specifications

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10
ADMS 44.22 Installation and Operation Manual
DESCRIPTION
saved/recalled.
1.6 Serial Communication
1.6.1 Serial RS-232 Control
The ADMS 44.22 contains a comprehensive set of RS-232 commands for
remotely controlling, querying, and updating the device from any standard RS-232
ASCII terminal or dedicated hardware controller at baud rates of 4800, 9600, 38400,
or 57600. There are two RS-232 control modes: Burst Mode, and Menu Mode. Burst
Mode uses short-form commands (and responses) with a prescribed syntax to facili-
tate scripting and integration into automated control systems. Menu Mode uses text-
readable menus and prompts to guide the user. All ADMS 44.22 commands can be
executed using Burst Mode commands, whereas Menu Mode provides access to only
the most frequently-used setup parameters and contains no switcher commands.
1.6.2 Error & Status Reporting
When the Unit ID = 0, the ADMS 44.22 sends automatic Burst Mode mes-
sages to the terminal to report status changes in the following controls:
• Switcher State
If an input is connected or disconnected from either output via the front
panel, remote control inputs, or serial commands, the unit sends an SL status
message indicating the connection state of all eight inputs in both outputs.
• AES Errors
If an AES Error condition is detected on any digital input connected to
Output 1, the unit sends an SD status message indicating which inputs have
experienced AES errors since the last time the error register was cleared.
• Silence Sensor Alarm
If the unit detects that either the left and/or right side of Output 1 has fallen
below a certain volume threshold for a prescribed period of time, the unit
sends a Silence Sensor Alarm (SS) message indicating the silence alarm state
for both outputs.
• GPI Inputs
In GPI Mode, whenever the state of a GPI input changes the units sends an
SPA status message indicating the current state of all 16 GPI inputs.
When the Unit ID is > 0, then the unit must be polled for status information.
1.7 External Control
1.7.1 Remote Control / GPI (PIP) Inputs
Sixteen general purpose parallel input (PIP) ports are available on the rear
panel that can read both external switch closures and TTL/CMOS level input sig-
nals. The function of these inputs is determined at power up by the GPI switch
(SW7) setting on the rear panel.
In Remote Mode (SW7 = OFF) all ADMS 44.22 front panel functions, with
the exception of headphone and powered monitor levels, can be remote controlled
via the first twelve inputs. Each remote control input controls a single front panel
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