Inline SWP123 User manual

High Resolution Video Products •A/V System Integration Tools •Interactive Training Systems
PRESENTATION SWITCHER
SWP123
OPERAT ION MANUAL

Installation and Safety Instructions
For Models without a Power Switch:
The socket outlet shall be installed near the equipment and shall be accessible.
For all Models:
No serviceable parts inside the unit. Refer service to a qualified technician.
For Models with Internal or External Fuses:
For continued protection against fire hazard, replace only with same type and rating of fuse.
Instructions d’installation et de sécurité
Pour les modèles sans interrupteur de courant:
La prise de courant d’alimentation sera installé près de l’équipement et sera accessible.
Pour tout les modèles:
Pas de composants à entretenir à l’intérieur. Confiez toute réparation à un technicien qualifié.
Pour les modèles équipés de fusibles internes ou externes:
Afin d’éviter tout danger d’incendie, ne remplacer qu’avec le même type et la même valeur de fusible.
Installations- und Sicherheitshinweise
Für Geräte ohne Netzschalter:
Die Netzsteckdose soll in der Nähe des Gerätes installiert und frei zugänglich sein.
Für alle Geräte:
Keine Wartung innerhalb des Gerätes notwendig. Reparaturen nur durch einen Fachmann!
Für Geräte mit interner oder externer Sicherung:
Für dauernden Schutz gegen Feuergefahr darf die Sicherung nur gegen eine andere gleichen Typs und gleicher Nennleistung
ausgewechselt werden.
Instalacion E Instrucciones de Seguridad
Modelos Sin Interruptor:
La conexión debe ser instalada cerca del equipo y debe ser accesible.
Para Todos Los Modelos:
Dentro de la unidad , no hay partes para reparar. Llame un tecnico calificado.
Modelos con Fusibles Internos o Externos:
Para prevenir un incendio, reemplace solo con el mismo tipo de fusible.
CE COMPLIANCE
All products exported to Europe by Inline, Inc. after January 1, 1997 have been tested and found to
comply with EU Council Directive 89/336/EEC. These devices conform to the following
standards:
EN50081-1 (1991), EN55022 (1987)
EN50082-1 (1992 and 1994), EN60950-92
Shielded interconnect cables must be employed with this equipment to ensure compliance with
the pertinent Electromagnetic Interference (EMI) and Electromagnetic Compatibility (EMC)
standards governing this device.
FCC COMPLIANCE
This device has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC rules. These limits are designed to provide against harmful
interference when equipment is operated in a commercial environment. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of
equipment in a residential area is likely to cause harmful interference, in which case the user will be
required to correct the interference at their own expense.

Table of Contents
Table of Contents ..........................................................................................................................1
Product Overview .........................................................................................................................2
Description........................................................................................................................2
Product Features................................................................................................................2
Compatibility.................................................................................................................................4
Video Inputs......................................................................................................................4
Audio Inputs......................................................................................................................4
Analog Audio Signals.........................................................................................4
Video Outputs...................................................................................................................4
Audio Outputs...................................................................................................................4
Analog Audio Signals.........................................................................................4
Installation.....................................................................................................................................5
Operation.......................................................................................................................................9
Front Panel Controls .........................................................................................................9
Switching Procedures......................................................................................................10
To select a different input:................................................................................10
To blank the output:..........................................................................................10
Audio Procedures............................................................................................................10
To select the master audio output: ....................................................................10
To adjust the master audio output volume level:.............................................10
To adjust the input audio volume level (input trim level).................................11
To mute and/or restore audio output:................................................................11
To adjust the microphone level:........................................................................11
To enable microphone talk-over:......................................................................11
To disable microphone talk-over: .....................................................................11
Serial Port Pin-Outs ........................................................................................................12
RS-232/RS-422/RS-485 Connections .............................................................................12
Dipswitch settings...........................................................................................................12
Power-on Settings...........................................................................................................12
Reset to Factory Default..................................................................................................12
Remote Operation.......................................................................................................................13
RS-232 Control...............................................................................................................13
Communication Protocol:.................................................................................13
Protocol Structure.............................................................................................13
Serial Commands ........................................................................................................................14
Addressing Commands ...................................................................................................14
Set-up Commands...........................................................................................................14
Switching Commands .....................................................................................................15
Volume Commands.........................................................................................................15
Specifications...............................................................................................................................19
Warranty......................................................................................................................................21

2
SWP123 OPERATION MANUAL - v1.1 5/21/02 2002 - INLINE, INC.
Product Overview
Description
SWP123 is a presentation switcher combining three A/V switchers and a master audio switcher
with a microphone pre-amplifier into one product. It is ideal for permanent installations, rentals,
complex staging operations, and any other display system requiring a high performance,
economical composite video/VGA/S-Video stereo audio presentation switcher.
• 4 x 1 Composite Video + Stereo Audio Switcher
• 4 x 1 S-Video + Stereo Audio Switcher
• 4 x 1 VGA + Stereo Audio Switcher
• Master Audio Switcher – Selects Composite Video, S-Video, VGA or Microphone
Audio Signal as the master audio output
SWP123 Model Description
SWP123-1 4 x 1 Composite Video/4 x1 VGA Switcher (No Audio Functions)
SWP123-2 4 x 1 Composite Video/Stereo Audio Switcher +
4 x 1 S-Video/Stereo Audio Switcher +
4 x 1 VGA/Stereo Audio Switcher +
Master Audio Switcher with Microphone Input
Product Features
• Video Performance — Provides 450 MHz video bandwidth
• Integrated Labeling — Switcher faceplate includes attachment posts to hold optional
nameplates that the user can engrave to identify inputs, or outputs
• Stereo Audio Switchers Accept Line Level Unbalanced Stereo Audio Signals
• Local and Master Audio Outputs — Can be wired to output balanced or unbalanced
stereo audio
• A/V Volume Control and Mute for master audio output
• Individual Audio Input Trim Levels — Units can store a unique input level for each
input
• Microphone Input with adjustable level and XLR input connector
• +24V Phantom Power for condenser microphones
• Microphone Talk-Over — Automatically reduces A/V audio level whenever a signal is
present at the microphone input

3
2002 - INLINE, INC. SWP123 OPERATION MANUAL - v1.1 5/21/02
• Talk-Over Threshold Adjustment —Determines the input signal level required to
engage the talk-over function. Users can adjust this control to optimize the talk-over
operation to accommodate the microphone output level, voice volume, or ambient
background noise level.
• RS-232/RS-422/RS-485 Serial Control Capability —Users can remotely control all
switching and volume functions using serial commands
• RS-232/422/485 Serial Control —Provides connection to a third party control system
• Internal Universal Power Supply with Double Fuse Operates with A/C Power
Voltages Worldwide: 50/60 Hz; 90 - 260 VAC
• IR Remote Control Capability —Enables user to remotely control switching and
volume functions using the optional CTL120 IR Remote Control

4
SWP123 OPERATION MANUAL - v1.1 5/21/02 2002 - INLINE, INC.
Compatibility
The SWP123 consists of three separate 4 x 1 A/V switchers and an audio master switcher. Each
switcher or group is individually labeled as inputs 1–4.
Video Inputs
The SWP123 presentation switcher provides:
• Four female 4-pin mini DIN inputs that accept S-Video signals on all four inputs
• Four female 15-pin HD inputs that accept VGA/RGBHV/RGBS/RGsB/R-y B-y y signals
on all four inputs
• Four female BNC inputs that accept composite video signals on all four inputs
Audio Inputs
Analog Audio Signals
The SWP123 presentation switcher provides four pairs of RCA connectors per switcher for
analog input. All four analog stereo audio inputs are compatible with unbalanced line level
signals from a VCR, DVD player, computer audio card, or any other audio device that delivers a
stereo line level signal.
Video Outputs
The SWP123 presentation switcher provides:
• One composite video BNC output
• One S-Video 4-pin Mini DIN output
• One VGA/Component 15-pin HD output
Audio Outputs
Analog Audio Signals
The SWP123 presentation switcher provides one master analog stereo audio output that provides
a balanced or unbalanced line level output signal (see page 5 for output wiring diagram). This
output can drive any line level compatible audio unit, or a local device such as powered speakers.
The output level is adjustable using the volume control.

5
2002 - INLINE, INC. SWP123 OPERATION MANUAL - v1.1 5/21/02
Installation
Below are instructions for installing the SWP123 presentation switcher. An application diagram
showing typical connections is on page 7.
Note: Prior to initiating the installation procedure, ensure that there is no
power supply cord connected to the unit
1. Place/Install the SWP123 at the desired location. Seat the unit on a flat surface or is
securely installed in a standard 19”equipment rack.
2. Connect Composite Video, S-Video and VGA source signals to the appropriate inputs.
3. Connect Composite Video, S-Video and VGA audio signals to the appropriate inputs.
4. Connect a microphone to the Microphone Input using the XLR input connector. For
applications using condenser microphones, enable +24 V phantom power using the
on/off switch located on the rear of the unit, near the XLR input connector.
5. Connect the Composite Video, S-Video and VGA outputs to the appropriate display
device inputs.
6. Connect the Master Audio Output to the audio system input. Wire the output as
balanced or unbalanced transmission according to the diagram below.
For Unbalanced Stereo Audio Output: For Balanced Stereo Audio Output:
Note: Each group (Composite Video, S-Video, and VGA) consists of a local
audio output. The local audio outputs can be wired as balanced or
unbalanced however; no audio control is available

6
SWP123 OPERATION MANUAL - v1.1 5/21/02 2002 - INLINE, INC.
7. If desired, connect a control system, computer, or other serial command source to the
control port. Set dipswitches located near the control port accordingly for
communications via RS-232 or RS-422/RS-485 communications.
8. Connect power to the SWP123 using the IN9230 IEC power cable (included).
9. Turn on the video/audio sources, the display device and the audio system.

APPLICATION DIAGRAM
SWP123 PRESENTATION SWITCHER
TECHNICAL SUPPORT:
[phone]
[phone]
www.inlineinc.com
MIC INPUT
RX+
RX-
TX+
TX-
GND
RS422/485RS232
+
-
+R
L
-
+
-
+R
L
-
L
R
L
R
L
R
INPUT 1
L
R
INPUT 2 INPUT 3
AUDIO [S-VIDEO]
INPUT 4
OUTPUT
+
-
+R
L
-
L
R
L
R
L
R
INPUT 1
L
R
INPUT 2 INPUT 3
AUDIO [COMPOSITE]
COMPOSITE VIDEO
MADE IN U.S.A.
INPUT 4
INPUT 1 INPUT 2 INPUT 3 INPUT 4
OUTPUT
OUTPUT
S-VIDEO
INPUT 1 INPUT 2 INPUT 3 INPUT 4 OUTPUT
+
-
+R
L
-
L
R
L
R
L
R
FUSE: 1.6A; 250V; TIME DELAY
90-260 VAC; 0.3 A; 47-63 HZ
MASTER
AUDIO
OUTPUT
INPUT 1
L
R
INPUT 2 INPUT 3
AUDIO [VGA]
INPUT 4
INPUT 4 OUTPUTINPUT 3
VGA
INPUT 2INPUT 1
OUTPUT
SERIAL
PORT SERIAL
FORMAT
SELECT
+24V
PHANTOM
POWER
OFF
ON
!
+
TALK OVER
THRESHOLD
ADJUST
sound system
input devices
input devices output devices
control
Podium
Microphone Hand-held Microphone
= Video
= Audio
= Control
Personal
Computer Laptop DVD Document Camera VCR Video Camera Plasma Display Data Projector
Control System
IN3262 1 x 2
VGA Distribution
Amplifier
DAV101
VGA Line Driver
CTL120
Infrared
Remote
(optional)
To Infrared
Sensor on
Front Panel

Rear
View
Front
View
CONNECTORS & CONTROLS
SWP123-2 PRESENTATION SWITCHER
TECHNICAL SUPPORT:
[phone]
[phone]
www.inlineinc.com
MIC INPUT
RX+
RX-
TX+
TX-
GND
RS422/485RS232
+
-
+R
L
-
+
-
+R
L
-
L
R
L
R
L
R
INPUT 1
L
R
INPUT 2 INPUT 3
AUDIO [S-VIDEO]
INPUT 4
OUTPUT
+
-
+R
L
-
L
R
L
R
L
R
INPUT 1
L
R
INPUT 2 INPUT 3
AUDIO [COMPOSITE]
COMPOSITE VIDEO
MADE IN U.S.A.
INPUT 4
INPUT 1 INPUT 2 INPUT 3 INPUT 4
OUTPUT
OUTPUT
S-VIDEO
INPUT 1 INPUT 2 INPUT 3 INPUT 4 OUTPUT
+
-
+R
L
-
L
R
L
R
L
R
FUSE: 1.6A; 250V; TIME DELAY
90-260 VAC; 0.3 A; 47-63 HZ
MASTER
AUDIO
OUTPUT
INPUT 1
L
R
INPUT 2 INPUT 3
AUDIO [VGA]
INPUT 4
INPUT 4 OUTPUTINPUT 3
VGA
INPUT 2INPUT 1
OUTPUT
SERIAL
PORT SERIAL
FORMAT
SELECT
+24V
PHANTOM
POWER
OFF
ON
!
+
TAL K OVER
THRESHOLD
ADJUST
4BLANK13
VGA / AUDIO SELECT
24BLANK13
S-VIDEO / AUDIO SELECT
COMPOSITE VIDEO / AUDIO SELECT
2VGA
VOLUME
MUTE
MIC LEVEL
MICROPHONE
TALK OVER
S-VIDEO
MASTER AUDIO SELECT
VIDEO MIC
4BLANK132
SWP123 Presentation Switcher
VGA Switcher Controls S-Video / Audio Select
AV Volume
Controls
Composite Video / Audio
Select
IR Receiver
Window
Master Audio Switcher
Microphone
Controls
Microphone
Talk Over
Selector
Microphone
Input
Phantom
Power Switch
VGA Input
1-4
VGA
Output
VGA Local
Audio Output
S-Video Local
Audio Output
Composite Video
Local Audio Output
S-Video Input
1-4
Composite Video
Input 1-4
Serial
Port
S-Video Audio
Inputs 1-4
VGA Audio
Inputs 1-4
Composite Audio
Inputs 1-4
S-Video
Output
Composite
Video Output
AC Power
Input
Master Audio
Output

9
2002 - INLINE, INC. SWP123 OPERATION MANUAL - v1.1 5/21/02
Operation
Front Panel Controls
Video/Audio Input Select: Selects the desired video/audio input for that group.
Blank: Blanks the currently selected output. Use at any time to show a blank screen on the
display device. Enable blanking to disconnect video and audio from the output.
Master Audio Select: Selects the group (Composite Video, S-Video, VGA or Microphone) that
will be the master audio output.
Volume: Increases or decreases volume level of the master audio output. Use to
increase/decrease the audio output level.
Mute: Silences audio for the master audio output. When the audio is muted (no audio), the LED
glows. The audio remains muted until you press the button again.
Input Audio Volume Level (Input Trim Level): Adjust input trim level to maintain constant
volume level when switching between multiple inputs.
Mic Level: Control the audio level of the microphone. Use to increase/decrease the microphone
level.
Microphone Talk-Over: Enables microphone talk-over. When enabled, the master audio
output level automatically decreases when a signal is present at the microphone input. When the
signal is no longer present, the master audio level automatically increases to its previous level.
Talk-Over Threshold Adjust: Determines the input signal level required to engage the
microphone talk-over function. The threshold level adjustment can be optimized to
accommodate the microphone output level, voice volume, and ambient background noise level.

10
SWP123 OPERATION MANUAL - v1.1 5/21/02 2002 - INLINE, INC.
Switching Procedures
To select a video/audio input:
Press and release the desired input for each A/V group.
Result: A green LED above the button glows.
To select a different input:
Press the desired input button.
To blank the output:
Press and release the Blank button
Result: The red LED above the Blank button glows.
To disable blanking:
Press and release the desired input button.
Audio Procedures
To select the master audio output:
Press and release the desired group button (VGA, S-Video, Composite Video, or Mic).
Result: the green LED above the button glows.
To adjust the master audio output volume level:
Press and release the appropriate Volume button to raise or lower the volume level by
one step, or press and hold the appropriate Volume button to change the level
continuously.

11
2002 - INLINE, INC. SWP123 OPERATION MANUAL - v1.1 5/21/02
To adjust the input audio volume level (input trim level)
Adjusting the volume allows users to equalize the audio levels of the various inputs. This is
important so the volume level does not increase/decrease dramatically when switching between
inputs.
1. Press and hold the Input button that corresponds to the input device for which you want
to adjust the volume.
2. Press the Volume buttons to raise or lower the volume of the input device.
Note: You must make input trim level adjustments when the input’s group is
selected as the master audio output.
To mute and/or restore audio output:
Press the Mute button to alternately silence/restore audio output.
To adjust the microphone level:
Press and release the appropriate Mic Level button to raise or lower the microphone
level by one-step, or press and hold the appropriate Mic Level button to change the level
continuously.
To enable microphone talk-over:
Press and release the Microphone Talk-Over button.
Result: The green LED above the button glows
To disable microphone talk-over:
Press and release the Microphone Talk-Over button again to disable.
To adjust the talk-over threshold:
Using the IN9339 adjustment tool, gently adjust the Talk-Over Threshold Adjust pot
located near the microphone input on the rear of the unit:
• Adjust the pot clockwise to increase signal sensitivity at the microphone input.
• Adjust the pot counter-clockwise to decrease sensitivity at the microphone input.
Note: Care should be taken when making this adjustment, as the range of the
pot is ¾of a turn.

12
SWP123 OPERATION MANUAL - v1.1 5/21/02 2002 - INLINE, INC.
Serial Port Pin-Outs
The SWP123 utilizes a 5-pin captive screw terminal block. The pin configurations are as
follows:
RS-232/RS-422/RS-485 Connections
RS-232 Connection Diagram: Full Duplex RS-422/485 Connection Diagram:
Half Duplex RS-485 Connection Diagram:
Dipswitch Settings
Dipswitch settings change according to the standard used. Higher standards require a different
signal type. Dipswitches make subtle adjustments to that signal type. Configure the dipswitch
settings according to the following table.
Serial Format Dipswitch Settings
RS-232* 123 OFF
RS-422/RS-485 123 ON
*Factory default
Power-on Settings
To power the SWP123 up, simply plug the unit it the outlet. There is no power on/off switch.
Reset to Factory Default
Soft Reset - To restore all parameters (except input volume settings) to the default factory
setting, press the 1 and 4 VGA Audio Select input buttons.
Hard Reset - To restore all parameters, including input volume settings, to the default factory
setting, use the [DFLTx]command.

13
2002 - INLINE, INC. SWP123 OPERATION MANUAL - v1.1 5/21/02
Remote Operation
RS-232 Control
The SWP123 RS-232/RS-422/RS-485 serial control port accepts serial commands from a control
system, computer serial port, or any other device capable of sending out serial ASCII commands
at compatible baud rates. A complete listing of RS-232/RS-422/RS-485 codes is included below.
Communication Protocol:
• 8 data bits
• 1 stop bit
• No parity check
• 9600 baud (factory default setting)
• Full duplex
Protocol Structure
All commands sent to the unit must contain a leading character, the actual command, and an
ending character. The SWP123 can accept multiple commands, storing them in a buffer. It
immediately executes each command in the order it was issued.
The SWP123 recognizes [and ]as leading and ending characters, also called Command Codes.
The factory default for the Command Code is [ ]. Some sample command codes follow. For
example:
This part of the command string... Represents:
[ The leading character
ARC The actual command.
] The ending character
This command string... Means:
[ARC] Requests architectural information, e.g.,
Firmware version, etc.

14
SWP123 OPERATION MANUAL - v1.1 5/21/02 2002 - INLINE, INC.
Serial Commands
Addressing Commands
If the switcher is being used in RS-232 mode (no other devices connected in parallel) there is no
need to assign an address for this unit. If you are using multiple Inline products connected in
parallel to a single serial port using RS-422 or RS-485 communications, you will need to assign
an address for each unit.
The factory default for the unit is no address. The address for the unit must be between 01 and
98. Address 00 is a broadcast address and all units on the buss will perform the action
commanded; however, they will not issue any responses.
To open communications to an addressed device, you must send a [CCxx] command. All other
devices on the buss will ignore commands until addressed.
COMMAND DESCRIPTION
[ADDRxx] Assigns an address to the unit, 01 to 98. Address 99 is reserved.\
• xx = 01 - 98
[ADDR@] Removes an address from the unit. This is factory default and is the
typical way to use the switcher when in the RS-232 mode.
[ADDR?] Query unit for pre-assigned address.
[CCxx] Connects controller to the addressed unit. 00 is a broadcast address thus
all connected devices will perform commands. This command is to be
used in conjunction with the [ADDRxx]command string.
• xx = 01 - 98
Note: This command string is case sensitive.
Set-up Commands
These commands are for configuring the switcher, and you only need to send them once. If using
a third-party control system, you should place most commands in this section in the start-up
section of the program.
COMMAND DESCRIPTION
[ARC] Request for model and version information.
[CPx@] Re-sets the serial port to default of 9600, 8, N and 1.
[CPx?] Query serial port for current settings.
[CPxbpsfd] Configures the serial port for baud rate, flow control and duplex.
• b= 0 for 1200, 1 for 2400, 2 for 4800, 3 for 9600, 4 for 19200, 5 for
38400
• f= 0 to disable flow control, 1 to enable flow control
• d= 0 for full duplex, 1 for half duplex
[DFLTx] Performs factory reset. The partial reset will default A/V and microphone
volume levels and serial set-up but does not reset input trim levels. A full
reset will reset all parameters.
• x= 0 for partial reset, 1 for full reset

15
2002 - INLINE, INC. SWP123 OPERATION MANUAL - v1.1 5/21/02
COMMAND DESCRIPTION
[FPx] Enable/disable front panel control and request current status.
• x= 0 to disable, 1 to enable
• x= ? to request current state
• x= (left blank) to toggle current state
[RESx] Enable/disable serial responses from switcher.
• x= 0 to disable, 1 to enable
Switching Commands
These commands can only initiate a one-input-to-one-output switch.
COMMAND DESCRIPTION
[MSxOooIii] Executes the selection of an input for the specified
group.
• x= 1 to switch VGA
• x= 2 to switch S-Video
• x= 3 to switch Composite Video
• x= 4 to switch Master Audio
• ii = 01 –04 for input (00 = blank)
[MSx?] Query current input selection for the specified group.
• x= 1 to switch VGA
• x= 2 to switch S-Video
• x= 3 to switch Composite Video
• x= 4 to switch Master Audio
[BLANKx] Blanks the specified group.
• x= 1 for VGA
• x= 2 for S-Video
• x= 3 for Composite Video
Volume Commands
Use these commands to control volume levels for both inputs and outputs. Typically, adjust
input volume levels to minimize drastic changes in volume when performing switches.
COMMAND DESCRIPTION
[MUTEx] Used to mute/un-mute master audio output.
• x= 0 to disable mute, 1 to enable mute
• x= ? to request current state
• x= (left blank) to toggle current state
[VOLoox] Sets master or microphone volume level.
• oo = 01 for master audio, 02 for microphone audio
• x= + (plus sign) to increment volume level
• x= - (minus sign) to decrement volume level
• x= @ to return volume level to factory default
• x= ? to request current volume level

16
SWP123 OPERATION MANUAL - v1.1 5/21/02 2002 - INLINE, INC.
COMMAND DESCRIPTION
[VOLx] Sets master and microphone volume level simultaneously.
• x= + (plus sign) to increment volume level
• x= - (minus sign) to decrement volume level
• x= @ to return volume level to factory default
• x= ? to request current volume level
[VOLooxxx] Sets master or microphone volume level to a specific value.
• oo = 01 for master audio, 02 for microphone audio
• xxx = -550 to 090
Note: 090 equals max (9 db gain), 000 equals factory default (unity
gain), -550 equals minimum (-55db)
[VOLLoox] Sets master or microphone volume level for left channel only.
• oo = 01 for master audio, 02 for microphone audio
• x= + (plus sign) to increment volume level
• x= - (minus sign) to decrement volume level
• x= @ to return volume level to factory default
• x= ? to request current volume level
[VOLLooxxx] Sets master or microphone volume level to a specific value for left
channel only.
• oo = 01 for master audio, 02 for microphone audio
• xxx = -550 to 090
Note: 090 equals max (9 db gain), 000 equals factory default (unity
gain), -550 equals minimum (-55db)
[VOLRoox] Sets master or microphone volume level for right channel only.
• oo = 01 for master audio, 02 for microphone audio
• x= + (plus sign) to increment volume level
• x= - (minus sign) to decrement volume level
• x= @ to return volume level to factory default
• x= ? to request current volume level
[VOLRooxxx] Sets master or microphone volume level to a specific value for right
channel only.
• oo = 01 for master audio, 02 for microphone audio
• xxx = -550 to 090
Note: 90 equals max (9 db gain), 000 equals factory default (unity
gain), -550 equals minimum (-55db)
[VOLRMPoox] Starts volume ramp for master or microphone volume level.
• oo = 01 for master audio, 02 for microphone audio
• x= + (plus sign) for volume ramp up
• x= - (minus sign) for volume ramp down
[VOLSTOP] Stop volume ramp function.

17
2002 - INLINE, INC. SWP123 OPERATION MANUAL - v1.1 5/21/02
COMMAND DESCRIPTION
[VINiix] Sets input trim level for a specific input.
• ii = 01 –12 as follows:
o 01 –04 for VGA inputs 1 –4
o 05 –08 for S-Video inputs 1 –4
o 09 –12 for Composite Video inputs 1 - 4
• x= + (plus sign) to increment input trim level
• x= - (minus sign) to decrement input trim level
• x= @ to return input trim level to factory default
• x= ? to request current input trim level
[VINiixxx] Sets input trim level for a specific input.
• ii = 01 –12 as follows:
o 01 –04 for VGA inputs 1 –4
o 05 –08 for S-Video inputs 1 –4
o 09 –12 for Composite Video inputs 1 - 4
xxx = -640 to 000
Note: 000 equals max (factory default), -640 equals minimum (-64db
gain)
[VINx] Sets/Query input trim levels for all inputs simultaneously.
• x= + (plus sign) to increment input trim level
• x= - (minus sign) to decrement input trim level
• x= @ to return input trim level to factory default
• x= ? to request current input trim level
[MTOx] Used to enable/disable microphone talk-over.
• x= 0 to disable microphone talk-over, 1 to enable
microphone talk-over
• x= ? to request current state
• x= (left blank) to toggle current state

CONNECTORS & CONTROLS
SWP Switchers
CTL120-3 REMOTE CONTROL
1st BUTTON TO PRESS
SWP
SWITCHER
CTL120-3 COMMAND EXAMPLES FOR SWP SERIES SWITCHERS
COMMAND EXAMPLES
function: Select VGA input 2
steps: Press numeric button 1
Press numeric button 2
Press ENTER button to execute switch
function: Turn on MIC talk over
steps: Press TALK OVER button
function: Blank the S-Video switcher
steps: Press numeric button 2 to select S-Video
Press numeric button 0 to blank output
Press ENTER button to execute switch
function: Increase master A/V audio level
steps: Press and release VOL+ button to slightly
increase volume on all devices
Press and hold VOL+ button to continuously
increase volume on all devices
MIC VOL
ENTERMENU
TALK OVER MUTE
FREEZE
ENTPIP
POWER
123
45
897
0
6
S
SWP
SWITCHER
PROJECTOR
VIDEO
SCALER
VGA
AUDIO
BLANK
ENTER
S-VIDEO VIDEO
+
–
+
–
OKMENU
Numeric Buttons
(1, 2, 3, 4 and 0 only)
To select an input device:
First press 1-4 to select A/V group:
1= VGA
2= S-Video
3= Video
4= Audio
Then press 1-4 to select input device:
1= Input 1
2= Input 2
3= Input 3
4= Input 4
0= Blank
PROJECTOR POWER Button
(SWP125 only)
Sends the associated projector
ON/OFF code to the display
NOTE: Projector ON/OFF code must be
pre-programmed using the SWP
serial port
SWP SWITCHER Button
Press this button first to
set the CTL120 to control
SWP Series switchers
MIC + Button
Increases MIC audio level
ENTER Button
Executes switch after selecting
A/V group and desired input
MIC - Button
Decreases MIC audio level
TALK OVER Button
Turn ON/OFF mic talk over
VOL + Button
Increases master A/V audio level
VOL - Button
Decreases master A/V audio level
MUTE Button
Mutes master A/V audio level
IMPORTANT: You must press the SWP SWITCHER button ( ) once to set
the CTL120 remote to control SWP Series switchers.
SWP
SWITCHER