8 Audio Authority
®
Model HMX-244 User Manual
6.0 operatIng tHe MatrIX swItcHer
The HMX-244 is a matrix switcher capable of routing
audio/video signals from any of four sources to any of four
displays. The matrix may be operated by the front panel
controls, an IR remote control, or by RS-232 through a
computer or other third party controller.
The HMX-244 begins to operate as soon as power is
turned on, handshaking with sources and displays. Unused
ports do not operate
6.1 Front panel controls
Repeatedly press the SOURCE button in the appropriate
zone until the desired source (1, 2, 3, or 4) is selected.
• Lights (1-4) indicate the source that is currently selected
to the zone output.
• If a source is not powered on, the HMX-244 skips to the
next available source.
• The Power light indicates that the unit is receiving
power.
6.2 Ir reMote controls
The HMX-244 includes a main remote control that can be
used at the head end matrix location. It controls sources for
all four zones. Each row of buttons represents a zone. To
disconnect all sources from a zone, press OFF.
Auto Mode
may be used to avoid any TV showing a blank
screen. It automatically searches for a source input with
active video signal beginning with input 1. If no signal is
present, it searches input 2, 3, and 4. Override Auto Mode
in any zone by pressing one of the other source buttons.
Each 1380R Cat 5 zone receiver includes a zone IR
remote control. It controls only the zone output where the
1380R is located. The IR ports are only active when an
HDMI signal is present on both the source and respective
zone. If an external IR receiver is required, purchase a
5V demodulated IR receiver such as Model 804-052 from
Audio Authority.
6.3 rs-232 serIal control
Connect a computer or other serial controller to the RS-232
port on the rear panel using an RS-232 cable. The HMX-
244 serial commands are based on Windows™ OS super
terminal. Commands include on, off, and source selection
on any zone output.
Chose the right COM when setting “super terminal” and
then set the parameters as follows:
Baud Rate: 4800 bps
Data bit: 8 Bits
Parity: None
Stop Bit: 1 bit
Data stream: None
• Each command should be two or three characters,
followed by a carriage return. After each command, the
HMX-244 responds with “successful operation”.
• The next command must be sent within three seconds or
the error message: ”Overtime instruction” appears.
• If an incorrect command is received, the error: “wrong
instruction” appears.
• If the input or output is not connected or not in powered
on, “ineffective instruction” appears.
serIal coMMands
These commands are for the HMX-244 only. The serial
port on the Model 1380R receiver is not used.
The character for the zone output (A, B, C, or D) comes
first, then the number for the source input:
• zone 3 to source 2 = C3(carriage return)
• zone 1 to source 4 = A4(carriage return), etc.
To turn the HMX-244 on or off enter the following:
• ON(carriage return)
• OFF(carriage return)
To query the status of the HMX-244 enter the following:
• QS(carriage return)
Important:
all serial commands must be terminated with a
carriage return and line feed.
HMX-244
VIDEO MATRIX
1
2
3
4
ZONE 1
OFF
1
2
3
4
ZONE 2
OFF
1
2
3
4
ZONE 3
OFF
1
2
3
4
ZONE 4
OFF
AUTO
POWER
ZONE
REMOTE CONTROL
HMX-244 VIDEO MATRIX
1
4
2
3
SELECT
SOURCE
note:
Use only 5V demodulated IR
receivers such as Model 804-052
(sold separately)
IR Receiver pinout
Tip = +5 Volts
Ring = Data
Sleeve = Ground
IR Emitter pinout
Tip = Signal
Sleeve = Ground
