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User Manual
Rev. 1.0 - 27/10/06
TEX500-LCD & TEX1000LIGHT
1.
Surge Protection module
(see description in sect. 8.1.1): protects the
equipment from possible voltage surge events and electric discharges in the
power mains.
2.
Power amplifier supply unit:
provides adequate power supply for RF power
amplifier modules. It is a switching power supply unit with PFC full range; for
details of the PFC and converter modules, please see sections 8.1.2 and 8.1.3,
respectively.
3.
Service power supply unit:
provides adequate power supply for all modules
except RF power modules. Major components of this 50-Hz transformer-based
power supply unit are:
-
Power switch
-
Service fuse
-
Mains voltage selector
-
Service transformer
NOTE: Please see section 5.1 for power supply unit settings.
8.1.1 Mains power supply pulse protection (SLSRGPRPJ1KM)
This module is enclosed in a sealed metal case (see figures 9.1 and 9.3 - item
[8]); it features two externally mounted mains fuses (figure 6.2 - [20] and [35]) and
accommodates a bank of surge arresters that protect the equipment from any
surge events in the power mains.
Mains voltage is brought from this module to the main Power switch on the front
panel (figure 6.1 - [11]), which relays it to the service transformer TR1 (figures 9.2
and 9.4 - [4]).
Inside the surge protection module, a suitable 24VDC relay controlled via the
interface board isolates (single line) mains voltage to be fed to the power amplifier
power supply unit (PFC module). As a result, the interface board enables mains
power supply to PFC when these requirements are met:
•
POWER switch on front panel (figure 6.1 - [11]) set to ON;
•
No alarm or fault events present (see section 5.4);
•
Power output enabled (set to ON) in FNC operation menu (menu 4, see section
5.4.1);
•
RF output power set to over 0W using the edit mode (menu 2, see section
5.3).
8.1.2 PFC unit (PFCPSL1000)
The PFC unit is a rectifier that modulates drawn current to ensure it is drawn
sinusoidally (as far as possible) and achieve a 99% power factor.
