1
cBA 3G-025 800 MHZ
to 3.1 GHZ 25 wAtt
AMplifier
user MAnuAl
601-288A
CBA 3G-025
cBA 3G-025 800 MHZ
to 3.1 GHZ 25 wAt t
AMplifier
user MAnuAl
1 Safety information 5
2 Introduction 7
2.1 CBA 3G-025 introduction 7
3 Unpacking and installation 9
3.1 Unpacking 9
3.2 Installation 9
4 Operation 10
4.1 Front panel 10
4.2 Rear panel 11
5 Specications 12
6 Warranty 14
7 Adresses 16
contents
5
This apparatus has been designed and tested in accordance with BS EN 61010-1,
and has been supplied in a safe condition. This manual contains some information warnings which must be followed to ensure safe operation, and to retain
the apparatus in a safe condition.
This apparatus does not incorporate components liable to explode or implode
during normal operating conditions.
In normal operating conditions this apparatus does not liberate injurious or
poisonous gases.
Sound levels of this apparatus after installation in a rack are below 85 dBA,
as required by EN 61010-1. However local regulations may have a lower limit
or the system as a whole may exceed the local limit. In this case appropriate
action should be taken, ie of use of any protective equipment required by local
regulations.
This apparatus is of installation category 2.
1 sAfety inforMAtion
6
CBA 3G-025
This apparatus is capable of delivering harmful levels of
radio frequency power. Ensure at all times during operation that the RF output is properly terminated with an
adequately rated termination or transducer, and that the
cables and connectors attached to the apparatus are in
good condition.
The mains plug shall only be inserted in a socket outlet
provided with a protective earth contact. The protective
action must not be negated by the use of an extension
cord without a protective conductor.
The opening of covers or removal of parts is likely to
expose live parts.
This apparatus must be disconnected from all voltage
sources before it is opened for adjustment, replacement,
maintenance or repair.
Make sure that only fuses of the required rated current
andofthespeciedtypeareusedforreplacement.The
use of makeshift fuses and the short-circuiting of fuse
holders is prohibited.
7
CBA 3G-025 Introduction
The CBA 3G-025 is an amplier capable of supplying 25 W into a 50 ohm load
over the frequency range 800 MHz to 3 GHz, during the course of EMC tests on
electrical equipment. The amplier is designed with sufcient gain such that it
may be used with normal output levels of signal sources. A safety interlock on
the rear panel is also provided, which will mute the amplier when grounded.
The unit is powered from a switched mode power supply for high efciency,
high power factor and wide voltage range operation. The unit is air cooled with
integral fans, and is protected against faulty cooling by excess temperature
sensing.
A front panel indicator is provided to indicate over-temperature. The amplier is
designed for rugged operation into a variety of loads. The amplier is primarily
intended for use as a power source for EMC susceptibility testing, but is also
applicable to other systems requiring a wide-band linear amplier.
This amplier is designated as ‘professional equipment’ and should not be
operated by untrained staff.
As this product has the capability to generate high levels of RF energy it is not
intended for use in a residential environment.
Potential or theoretical hazards.
2 introduction
8
CBA 3G-025
Threat Precaution
Exposure of personnel to high RF
elds produced by an antenna connected to the output of the ampli-
er.
Ensure that the antenna is inside a
screened enclosure and t an interlock
to the entry door to prevent access
while the amplier is operating.
RF burns caused by contact with the
antenna connected to the output of
the amplier.
Ensure that the antenna is inside a
screened enclosure and t an interlock
to the entry door to prevent access
while the amplier is operating.
Amplier self oscillation caused by
feedback from un-terminated connectors.
This is an unlikely but theoretical
possibility. Always ensure that the
amplier input is terminated either
by the system signal generator or by
a suitable RF load/attenuator before
switching the amplier on.
Arcing due to high RF voltages present
at the output connector.
Always ensure that the output of the
amplier is terminated either by the
system antenna or a suitable high
power RF load or attenuator.
9
If any signs of damage are found, no attempt should be made to install the
instrument, which should be returned to Teseq or their agent. If the shipping
carton has been damaged, retain the shipping carton and packing material
for the carrier’s inspection. Check that the equipment is complete as in the
packing list above.
3.2 Installation
3 unpAckinG And instAllAtion
CBA 3G-025, 0.8-3 GHz amplier
Power cable (UK)
Power cable (USA / Japan)
Power cable (Europe)
Spare fuse T 3.15 A time delay 20 mm
CBA 3G-025 Operating manual, (this document)
Calibration report
3.1 Unpacking
The CBA 3G-025 package should contain:
This instrument must be earthed.
10
CBA 3G-025
4 operAtion
4.1 Front panel
Mains switch
Operating the mains switch will apply power to the amplier gain stages and
fan.
Power indicator
This indicator will illuminate when the mains switch is turned on, and power is
available from the mains.
Fault indicator
Should the amplier be subject to a failing in the cooling system, either by a
fan failure, inadequate air supply or excess ambient temperature, this indicator
will illuminate and the amplier gain stages will all be turned off. This action is
non-latching, so the gain stages will switch on again when the amplier has
cooled down.
RF input
The RF input will accept a signal from an RF generator. This input must be
within the operating frequency range of the amplier. An amplitude of up to 0
dBm will be sufcient to saturate the amplier. Operation outside the specied
frequency range should not be attempted, and may subject the amplier to
undue internal stress.
RF output
This connector must be suitably terminated at all times during operation. Ensure
that the cable and load are all capable of handling the power available, which
may be as much as 40 W. On no account operate the amplier without a proper
termination or with defective cables or connectors. The centre conductor of
the RF output represents a severe burn hazard to personnel.
11Air inlet
The amplier depends upon a free air supply for cooling. Ensure that the front
air inlet is not restricted.
4.2. Rear panel
Mains input
The mains input is an IEC 60320 type. The cable attached to the mains input
must be rated at 10 A to ensure proper operation at the minimum line voltage
of 85 Vac. The fuse-holder is integral with this mains connector. Use 3.15 A
anti-surge (T).
Input/output connectors (depending on model)
The RF input and output connectors may optionally be placed on the rear
panel.
Fan outlet
The amplier depends upon a free air supply for cooling. Ensure that the fan
outlets are not restricted.
12
CBA 3G-025
The following specication applies over the operational temperature and frequency range unless otherwise stated, and does not include the characteristics
of connecting cables.
5 specificAtion
Frequency range (instantaneous) 800–3100 MHz
Rated output power 25 W minimum
(800 MHz to 3 GHz)
22 W minimum
(3.0 to 3.1 GHz)
Output power at 1 dB gain compression 23 W minimum
(800 MHz to 3 GHz)
20 W minimum
(3.0 to 3.1 GHz)
Gain 46 dB
Third order intercept point 54 dBm
Gain variation with frequency ±2.5 dB
Harmonics at 23 W output power -20 dBc
Output impedance 50 Ohms
Stability Unconditional
Output VSWR tolerance Innity:1
Input VSWR 2:1
RF connector style Type N female
Safety interlock BNC female, s/c to mute
USB interface Optional
Supply voltage (single phase) 85–264 Vac
Supply frequency range 45–63 Hz
Supply power < 200 Va
Mains connector IEC 320
13EMC and safety
Conducted and radiated emissions EN 61326 class A
Conducted and radiated immunity EN 61326: 1997 table 1
Mains harmonic currents EN 61000-3-2
Voltage uctuations and icker EN 61000-3-3
Safety EN 61010-1
Power
Supply voltage (single phase) 90-240 Vac
Supply frequency range 45-63 Hz
Supply power <150 VA
Mains connector IEC 320
Environmental
Operating temperature range 0-40°C
Mechanical
Case dimensions 19 inch, 3U case, 440 mm deep
Weight 14 kg
Options (select at time of ordering)
341-718 Bench model with front panel mounted input/output connectors
341-818 Rack mountable with front panel mounted input/output connectors
341-918 Rack mountable with rear panel mounted input/output connectors
Notes
1 The third order intercept point is a nominal value, as its calculation depends
upon the power level at which distortion measurements are made.
2 Output VSWR tolerance is specied for excitation within the permitted levels
and frequency range.
14
CBA 3G-025
6 wArrAnty
Hardware
Teseq Limited (the company) warrants its ampliers to be free from defects
in workmanship and materials, under normal use and service, for three years
from the date of purchase from the company or its authorised agent.
If a product does not operate as warranted during the warranty period, the
company shall, at its option, repair the defective product or part, deliver an
equivalent product or part to replace the defective item, or refund the purchase
price paid for the defective product. Transportation of the defective product or
part to the factory or service centre is to be pre-paid by the customer. All products that are replaced will become the property of the company. Any replaced
or repaired product or part has a ninety (90) day warranty or the remainder of
the initial warranty period, whichever is longer.
All information in this manual is given in good faith. However, the company shall
not be liable for any loss or damage whatsoever arising from the use of this
manual, the product described in it or any errors or omissions in either.
15
notes
16
To nd your local partner within
Teseq®’s global network, please go to
www.teseq.com
© December 2010 Teseq
®
Specications subject to change
without notice. Teseq
®
is an ISOregistered company. Its products are
designed and manufactured under
the strict quality and environmental
requirements of the ISO 9001. This
document has been carefully checked.
However, Teseq® does not assume
any liability for errors or inaccuracies.
Headquarters
Teseq AG
4542 Luterbach, Switzerland
T + 41 32 681 40 40
F + 41 32 681 40 48
sales @ teseq.com
www.teseq.com
China
Teseq Company Limited
T + 86 10 8460 8080
F + 86 10 8460 8078
chinasales @ teseq.com
Germany
Teseq GmbH
T + 49 30 5659 8835
F + 49 30 5659 8834
desales @ teseq.com
Singapore
Teseq Pte Ltd.
T + 65 6846 2488
F + 65 6841 4282
singaporesales @ teseq.com
Taiwan
Teseq Ltd.
T + 886 2 2917 8080
F + 886 2 2917 2626
taiwansales @ teseq.com
USA
Teseq Inc.
T + 1 732 417 0501
F + 1 732 417 0511
Toll free +1 888 417 0501
usasales @ teseq.com
Manufacturer
Teseq AG
4542 Luterbach, Switzerland
T + 41 32 681 40 40
F + 41 32 681 40 48
sales @ teseq.com
France
Teseq Sarl
T + 33 1 39 47 42 21
F + 33 1 39 47 40 92
francesales @ teseq.com
Japan
Teseq K.K.
T + 81 3 5725 9460
F + 81 3 5725 9461
japansales @t eseq.com
Switzerland
Teseq AG
T + 41 32 681 40 50
F + 41 32 681 40 48
sales @ teseq.com
UK
Teseq Ltd.
T + 44 845 074 0660
F + 44 845 074 0656
uksales @ teseq.com
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