R.V.R. Elettronica TEX150, User Manual

Page: 47 / 110

TEX150
41 / 40 User Manual Rev. 4.0 - 27/07/01
• Adjust output power at minimum turning PWR ADJ trimmer completely
anticlockwise and then switch on the equipment.
• Increase output power until 150W turning PWR ADJ trimmer clockwise.
• Turn trimmer R23, until to have on pin 3 of U4 a voltage included between 265
and 275 mV. In these conditions temperature protection starts at 70°C. Adjust
R23 until output power begins to decrease.
• Then, adjust R25 until SWR/TEMP led indicator starts to blink.
Maximum Output Power Adjustment
Can be necessary to set maximum output power at maximum value included
between 10 and 150W.
• Connect a 50 Ohm, 300 W dummy load to the RF output.
• Adjust output power at minimum turning PWR ADJ trimmer completely
anticlockwise and then switch on the equipment.
• Increase output power until 150W turning PWR ADJ trimmer clockwise.
• Turn trimmer R44, until to have maximum output power presetted on external
wattmeter.
• Then, adjust output power turning PWR ADJ trimmer and note that output
power can be increased over presetted value.
NOTE: The jumpers shown in table , disable all protections (all enabled from firm).
A no-correct use of these jumpers can cause seroius damage to the unit and will
automatically make the warranty void.
ALARMS CARD TRIMMERS AND JUMPERS
REF. DESCRIPTION
R2 Internal AGC Adjustment
R7 Max Power Output Adjustment (VSWR INFINITE)
R12 External VSWR Threshold Adjustment
R16 External AGC Adjustment
R23 Temperature Threshold Adjustment
R25 Temperature Led Lighting Adjustment
R44 Max Power Output Adjustment
JP1 Internal AGC Insertion (DON'T REMOVE)
JP2 Internal AGC Insertion (DON'T REMOVE)
JP3 External VSWR Insertion
JP4 External AGC Insertion
JP5 Temperature Threshold Insertion
JP6 Maximum Output Power Threshold Insertion