Galcom CT 45 User Manual
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Preliminary
USER MANUAL FOR THE
CORNERSTONE TRANSMITTER
Model: CT-X
and the
CORNERSTONE 45 WATT AMPLIFIER
Model: CT-45
September 30, 2009
GALCOM INTERNATIONAL
115 Nebo Rd., Hamilton, Ontario, Canada, L8W 2E1
Phone: (905) 574-4626 - Fax: (905) 574-4633 - www.galcom.org
Providing durable technical equipment for communicating the Gospel worldwide
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TA B L E OFCONTENTS
TABLE OF CONTENTS .................................................................................................... 2
Section 1 – General Description ......................................................................................... 4
Section 2 – CT-X Transmitter Hardware ............................................................................ 5
2.1 Front Audio Inputs ............................................................................................... 5
2.2 Rear Audio Inputs ................................................................................................ 5
2.3 Contrast Adjustment ............................................................................................. 6
2.4 RF Output Connector ........................................................................................... 6
2.5 CT-X Digital IO Connector .................................................................................. 6
2.6 Power Socket and Switch ..................................................................................... 6
2.7 Ethernet Connection ............................................................................................. 7
2.8 Case Configuration ............................................................................................... 7
2.8.1 Rack Mount Configuration ........................................................................... 7
2.8.2 45 Degree Desktop Configuration ................................................................ 7
2.9 Cleaning the Transmitter ...................................................................................... 7
2.10 Touchscreen Display ........................................................................................ 8
Section 3 - CT-45 Hardware ............................................................................................... 8
3.1 RF Input Connector .............................................................................................. 8
3.2 RF Output Connector ........................................................................................... 8
3.3 Power Connector .................................................................................................. 8
3.4 CT-45 Digital IO Connector ................................................................................ 9
3.5 Main Power Toggle Switch .................................................................................. 9
3.6 Power Switch........................................................................................................ 9
3.7 Power LED ......................................................................................................... 10
3.8 Amplifier LED ................................................................................................... 10
Section 4 - Step by Step Installation and Setup ................................................................ 11
4.1 Installing the CT-X Transmitter ......................................................................... 11
4.1.1 Unpacking the CT-X ................................................................................... 11
4.1.2 Installing in a 19” Rack ............................................................................... 11
4.1.3 Installing the 45 Degree Wings ....................................................................... 11
4.1.4 Connecting the cables to the CT-X Transmitter ......................................... 12
4.1.5 Unpacking the CT-45 Amplifier ..................................................................... 12
4.1.6 Installing the CT-45 into a 19” Rack .......................................................... 12
4.1.7 Connecting the CT-X Transmitter to the CT-45 Amplifier ........................ 13
4.1.8 Verify the hardware installation .................................................................. 13
Section 5 – Software Operation (CT-X & CT-45) ........................................................... 14
5.1 Quick setup ......................................................................................................... 14
5.2 Views Menu ....................................................................................................... 15
5.2.1 Views / Frequency ...................................................................................... 15
5.2.2 Views / All ....................................................................................................... 15
5.2.3 Views / Temperature ....................................................................................... 16
5.2.4 Views / Levels.................................................................................................. 16
5.3 Settings Menu ..................................................................................................... 16
5.3.1 Settings / Frequency .................................................................................... 16
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5.3.2 Settings/Input .............................................................................................. 17
5.3.3 Settings/Audio............................................................................................. 17
5.3.4 Settings/Mix ................................................................................................ 18
5.3.5 Settings/Password ....................................................................................... 18
5.3.6 Settings/Temperature .................................................................................. 18
5.3.7 Settings/Clock .................................................................................................. 19
5.3.8 Settings/Subcarrier ........................................................................................... 19
5.3.9 Settings/Files ............................................................................................... 19
5.4 Modules menu .................................................................................................... 19
5.4.1 Modules/CT-45 ........................................................................................... 20
5.5 Modes ................................................................................................................. 21
5.5.1 Modes/Advanced ........................................................................................ 21
5.5.2 Modes/Mixer ............................................................................................... 21
Section 6 – Mixer Mode ................................................................................................... 22
6.1 Operation of mixer mode ................................................................................... 22
Section 7 - Technical Specifications ................................................................................. 23
7.1 Cornerstone Transmitter CT-X ............................................................................... 23
7.2 Cornerstone Amplifier CT-45 ................................................................................. 25
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Section 1 – General Description
Galcom’s Cornerstone Transmitter CT-X is a rugged, all digital transmitter designed for
use around the world. It is a compact unit approximately 9” x 6” x 4” (23cm. x 15cm. x
10cm.) with a small attached stand for desk operation, or attachable wings for 19” rack
mount. Inputs for microphones, CD player, MP3 player, internet connection, etc. are all
built into the unit. A touch screen display allows for immediate access and input of all
required settings as well as providing an on screen mixer.
As a stand alone unit the CT-X Transmitter can broadcast in FM 88 MHz - 108 MHz
generally to a large auditorium. This unit is ideal for use in countries where technology
and reliable electricity are limited. Its advanced digital design and user friendly touch
screen operation make it easy to install and operate. With its rugged construction, it is
designed for use in all climates and widely varying conditions.
The electrical power configuration for the CT-X operates on 100-230VAC while the CT45 operates on 110 or 220 VAC. Where reliable power is not available, with the addition
of a solar power supply, it can operate on 12-24 VDC and provide the power to the CTX.
As its name implies, the Cornerstone Transmitter is the foundational unit for several
additional amplifiers that will expand its reach to an entire city and beyond. The first
amplifier in this series is the CT-45 which only operates in conjunction with the
Cornerstone Transmitter CT-X. The expansion to a 450 Watt amplifier is planned in the
future.
Some of the features of this system include a stereo encoder, an audio processer, six
channel input, SCA, touch screen control, SWR monitoring, optional Ethernet card,
complete mixing of inputs, pre-emphasis and a “save and restore” option for all settings.
The following pages provide detailed instructions for installing and operating this system.
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Section 2 – CT-X Transmitter Hardware
The CT-X Transmitter is a small, lightweight radio
transmitter that is ideal for transmitting a short
distance in auditoriums. With the addition of the CT45 Amplifier the signal can be boosted to 45 Watts of
power. The CT-X Transmitter is not designed for use
with amplifiers from other manufacturers.
2.1 Front Audio Inputs
There are two audio input plugs on the front of the transmitter
labeled Line/Mic 1L and Line/Mic 2L. These are balanced line
inputs. They will accept ¼” or XLR connectors, balanced or
unbalanced cables, and line level or microphone level inputs.
Ideally balanced XLR cables will be used for the input to the
transmitter.
2.2 Rear Audio Inputs
On the back of the transmitter there are an additional 4 audio
inputs labeled Line 2 L, Line 2 R, Line 3 L, and Line 3 R. These
accommodate RCA component level inputs.
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2.3 Contrast Adjustment
On the back of the transmitter there is a contrast dial that can be adjusted
with a small slot screwdriver. Turn the transmitter on and then adjust the
dial until the touchscreen display is easily visible.
2.4 RF Output Connector
On the back of the transmitter is a BNC connector labeled RF Output.
This is a 50 Ohm output port. This can be connected directly to an
antenna for broadcast to an auditorium or it can be connected to the CT-45
Amplifier.
2.5 CT-X Digital IO Connector
On the back of the transmitter there is a connector plug labeled Digital IO.
This is used when the transmitter will be controlling other devices such as
the CT-1 (this is a 1 Watt unit) or CT-45 Amplifier and also for future
options for the CT-X Transmitter.
2.6 Power Socket and Switch
On the back of the transmitter is a power socket
labeled 5VDC Regulated. The CT-X Transmitter
requires a regulated DC power supply. Use of
power adapters other than the one provided with the
Cornerstone Transmitter CT-X could cause damage
to the transmitter and to the power adapter. Use
only the power adapter supplied with the unit.
The toggle push button for turning the Cornerstone Transmitter on and off is labeled
Power and is located on the top of the unit.
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2.7 Ethernet Connection
An Ethernet RJ-45 connector is located on the top of the transmitter. A separate network
card can be installed into the Cornerstone Transmitter which will allow for remote
monitoring and control of the Cornerstone Transmitter. Without the optional network
card installed into the CT-X, the Ethernet connection will not function.
2.8 Case Configuration
The CT-X case can be configured to sit flat on a table, to sit at a 45 degree angle or to be
installed in a standard 19” rack.
2.8.1 Rack Mount Configuration
The Cornerstone Transmitter case can be configured to be mounted on a standard 19 inch
rack. Included with the transmitter are two rack mount wings. These screw onto the
sides of the transmitter.
2.8.2 45 Degree Desktop Configuration
The Cornerstone Transmitter comes with two wings that allow it to easily be used on a
desktop. These wings screw onto either side of the Cornerstone Transmitter.
2.9 Cleaning the Transmitter
Do not use solvents, glass cleaner or abrasives on the touchscreen display. The display
screen can be damaged by harsh chemicals. To clean, gently wipe off the transmitter and
display with a damp cloth.
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2.10 Touchscreen Display
On the front of the transmitter is a touch screen display. Included with the transmitter is a
stylus. A gentle touch with the soft plastic end of the stylus is all that is needed to control
all features of the Cornerstone Transmitter. Alternatively, the transmitter can be operated
with the touch of a finger. Avoid putting excessive pressure on the glass touch screen.
The touch screen display can be used in any lighting condition from direct sunlight to
total darkness.
Section 3 - CT-45 Hardware
The CT-45 Amplifier is a 45 Watt RF
Amplifier. It is controlled by the CT-X
Transmitter. The touch screen on the CT-X
Amplifier must be used to control the CT-45
Amplifier.
The CT-45 Amplifier will only operate with the CT-X Transmitter. The CT-45 Amplifier
cannot be used with other manufacturers’ transmitters or exciters.
3.1 RF Input Connector
On the back of the CT-45 Amplifier is a BNC RF input connector. This is connected to
the CT-X Transmitter using 50 ohm BNC cable.
3.2 RF Output Connector
On the back of the CT-45 Amplifier there is an N-Type connector for connection to the
transmitting antenna. Using 50 ohm coax cable for the connection between the antenna
and the amplifier, it is important to ensure the cable between the antenna and the
amplifier is in good working condition. A short or open circuit can damage the CT-45
Amplifier.
3.3 Power Connector
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