The material contained in this document is the property of Electronics & Innovation Ltd., it is
subject to change without notice.
August 2013 Revision B
2.3 OPERATION
A line cord is supplied to form a connection between the mains supply and the
rear of the unit. Plug this into AC input at the rear of the unit and the AC mains
outlet.
2.3.1 Proceed as follows:
(i) Ensure that there is at least 3” or 7.5 cm clearance at the rear of the
unit for air flow.
(ii) Switch on power and observe that the green led illuminates. (A brief
flash of the fault led is normal at turn on).
(iii) Ensure RF input voltage is not excessive
a. The 1 V rms indicated maximum input voltage is 5 times the level of
the input signal required to achieve maximum output. Input voltages
in excess of 2 volts peak may permanently damage the instrument.
(iv) Connect the output via a 50 ohm coaxial lead and BNC plug to the
load.
(v) Connect the input signal via a 50 ohm coaxial lead and BNC plug to
the input connector.
Chapter 3 Technical Description
3.1 GENERAL DESCRIPTION
The 210L is designed to amplify signals by 40 dB in the frequency band of 15
KHz to 12 MHz. The signal from the front panel BNC connector is fed via a length
of 50 ohm coaxial cable into the input of the two way splitter. The signal is split
into two and fed to the two power amplifiers that are in parallel with each other.
Each power amplifier is a two stage unit, each stage comprising of a push-pull
LDMOS Fet. The output of each stage is then combined and fed to the output of
the unit.
The power supply unit provides a 35.3 VDC 5 ampere source. It is a switch mode
power supply unit. The output feeds the PA The power supply also has a 5 VDC
output which feeds the fault detection board.
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