1
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comm
Volume
Controller
BOX
ZTS0050
Audio In 2
Audio In 1
Audio Out
L
L
R
G
R
G
DC In
IRBus
G
G
D
+
Audio Out
ZTS0050 “VolumeBox”
Overview.
The ZTS0050 VolumeBox is part of the S:Range (Simple, Smart, Stand Alone) family
of products. It is a small, inexpensive, simple to use 2 input stereo audio switcher
with audio gain control and faders that can be in conjunction with control processors
or directly connected to any control panel in the CommBox range.
Like all products in the S:Range, it can optionally be addressed so as to allow up to 15
S:Range units to be used on the same control bus.
The unit operates from a 12 volt DC plugpack. It can also supply power to, or be
powered from, the IRBus.
Although intended primarily to add volume control
capabilities to projectors, the VolumeBox is very
versatile.

Its two-input switch allows a VolumeBox to switch between HDMI audio
output from a projector and analog audio directly from a wallplate.

Several AVBox units can be linked together to form a multi-room AV system.
Up to 15 can be driven from a single IRBus serial line, either from a control
panel or from a processor serial port.
It's assumed you already know how to program a Joey or similar control panel. This
manual will concentrate on how to connect the VolumeBox but includes a brief
example of programming a Joey to control it.
ZTS0050 VolumeBox manual.
Page - 1 -
2
Example 1 - a typical standalone projector audio installation.
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comm
Volume
Controller
BOX
ZTS0050
Audio In 2
Audio In 1
Audio Out
L
L
R
G
R
G
Powered
speaker
DC In
IRBus
G
G
D
+
Audio Out
Powered
speaker
DC In
GND
IRBus
Data +12V
IR Output 2
IR Output 1
Progm Port
SK9
SK8
SK4
SK6
SK7
SK3
SK5
Command
Systems P/L
PCB0241C
PIR
RS232 Port 2
Wallplate
Wallplate
VGA
VGA Audio
Audio
VGA
VGA
HDMI
HDMI
Control panel programming notes
The VolumeBox defaults to Input 1 and unity gain on powerup. This means that you only need to send AVBox Volume
commands from the Volume keys. (The VolumeBox firmware
is the same as that of the AVBox).
You can use either pair of audio outputs – via the 3.5mm jack
or the screw terminal connector.
ZTS0050 VolumeBox manual.
Page - 2 -
SK1
Joey Panel
PIR Port
Pin 4 - Sense
Pin 5 - GND
Pin 6 - +12V
RS232 Port
Pin 4 - TxD
Pin 5 - GND
Pin 6 - CTS
SK2
RS232 Port 1
3
Example 2 – integrating HDMI digital audio capability.
www.commandsystems.com.au
comm
Volume
Controller
BOX
ZTS0050
Audio In 2
Audio In 1
Audio Out
L
L
R
G
R
G
Powered
speaker
DC In
IRBus
G
G
D
+
Audio Out
Powered
speaker
DC In
GND
IRBus
Data +12V
IR Output 2
IR Output 1
Progm Port
SK9
SK8
SK4
SK6
SK7
SK3
SK5
Command
Systems P/L
PCB0241C
Audio Out
RS232 Port
Pin 4 - TxD
Pin 5 - GND
Pin 6 - CTS
HDMI in
SK1
Joey Panel
PIR Port
Pin 4 - Sense
Pin 5 - GND
Pin 6 - +12V
Projector
SK2
PIR
RS232 Port 2
RS232 Port 1
Wallplate
Wallplate
VGA
VGA Audio
Audio
VGA
VGA
HDMI
HDMI
Control panel programming notes
For analog input you need to send Input 1.
For HDMI audio send Input 2.
Sending Input 3 or Input 4 will disconnect the audio.
DO NOT USE the EQ commands (i.e. Bass, Treble) as they are not supported on the
Volume Box hardware.
ZTS0050 VolumeBox manual.
Page - 3 -
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Using the Advanced Features.
Skip the following two pages unless you need these features.



To use more than one VolumeBox on the same control bus you must set each
to a unique address.
If you have more than 15 S-range devices on the bus you can set a
VolumeBox so that it will only respond to the new-format codes – making 30
devices on the same bus possible.
It's also possible, when using the new-format codes, to control each of the 4
audio outputs on each volume box separately.
Accessing any of these features requires
that you open the box. You will see the
option pads on the right-hand end of the
PCB as shown in the diagram. With a
soldering iron, apply a solder bridge to the
appropriate option pad pair.
Setting the address is fairly obvious – a
solder bridge against a number adds that
number to the address. Example – to set
the address to 5 you would solder bridge
pad pairs 1 and 4.
Bridging New codes only will cause the
box to no longer listen to Standard codes,
but require the use of the new-format
codes from the library. New-format codes
have integral addressing, meaning that
you choose the address by the choice of codeset.
4 ch mode allows you to control the volume level of each of the four audio outputs,
that is, L and R on the screw terminals and L and R on the 3.5mm jack,
independently. 4 ch mode requires the use of the new format codes.
Where would you use 4 channel mode?
The next page shows an example – separate control of four mono feeds, as might
typically be used in a BGM system.
ZTS0050 VolumeBox manual.
Page - 4 -
5
Example 3 - Four channel mode – BGM system in a restaurant
Tip- Rear L
Ring – Rear R
Sleeve - Gnd
www.commandsystems.com.au
BOX
ZTS0050
Audio In 2
Audio In 1
Audio Out
L
L
R
12v DC in
comm
Volume
Controller
G
R
G
DC In
IRBus
G
G
D
+
Audio Out
L and R
paralleled on
sources.
You need to bridge the “4 ch mode” pads as shown on the previous page, and use
the new format codes from the library to access the separate fader commands.
ZTS0050 VolumeBox manual.
Page - 5 -
6
Programming a Joey to control a VolumeBox
In this example, we’ll program the
Volume Up key for a VolumeBox in a
standalone environment. In other
words, we only have one
VolumeBox.
We’ll assume you have already
created the Volume Up key
graphically.
1. Leave the VolumeBox
unmodified. This way we
don’t need to send an
address code.
2. Open the Joey Editor and the
file you wish to work with.
3. Select Edit Behaviour.
4. Double-Click the Volume Up
key.
5. Click “Add”. The Code
Sequencer window will open.
6. In the Codeset drop-down,
choose AVBox.
7. Choose Volume Up from the
Codes list. Click OK.
Repeat items 4, 5 and 7 for all the keys that you wish to use to control the
VolumeBox.
ZTS0050 VolumeBox manual.
Page - 6 -
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Programming to control multiple VolumeBoxes
(or multiple s:range products)
All s:range products share a common code protocol. They rely on a code from 0 to 15
being sent to them to match the address set on the option pads and so enable the
remaining codes to operate the device. If you have just one box, you can leave it on
address 0 and forget about addressing and the following section. However if you are
connecting two or more s:range boxes you will need to know about how to handle
addressing.
Case 1 – you have a separate menu/screen for the controls for each box.
1. On the key that opens each menu, send the address code for the box that’s
associated with that menu. This will enable the box for commands.
2. Within the menu, just send the required command, without the preceding
address code.
3. If you want to disable “accidental” control of all items within a menu, send a
“0” from the Back or Close key. This will disable the control of all boxes,
except of course any box that’s set to address 0.
This method is preferred because it provides faster, smoother response, particularly
when you are performing volume adjustments.
Case 2 – you are controlling more than one box from the same menu.
1. For each key in the menu, send the
address code followed by the
command code, as in the example
shown here.
2.
If you are sending a command such
as a volume control, insert a – begin
loop – after the address code. This
will cause the address code to be
sent when the key is first pressed,
followed by the Volume Up. In this
way you get smoother, more
responsive volume control
operation.
3. Alternatively, use the new format
codes. They have integral addressing.
ZTS0050 VolumeBox manual.
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