1
Safegua
rds
2
Terms and
Warranty
3
Principl
e o
f
Operati
on
4
Ins
talla
tion
5
Operati
on
6
C
ont
rol Syst
em
7
RF Componen
ts
8
Power
Supp
ly
9
Maintenan
ce
10
Troubleshoo
ting
Display Interface Module
REV 1.02 (ASY 016)
Touchscreen Option
The primary function of the Display Interface module is, as the name suggests,
providing the display and user interface for the control system. This circuit board
is mounted behind the front panel of the power amplifier enclosure(s) in the
amplifier system, near the 4.3” touchscreen or OLED display. All switch/settings
and user interface is handled through the resistive touchscreen. The touchscreen
on the front panel is connected to the Display Interface PCB through a cable.
These components provide the user with the ability to monitor the following
power amplifier or transmitter parameters from the front panel:
• Forward (incident) power at the power amplifier or transmitter output.
• Reflected (reverse) power at the power amplifier or transmitter output.
• DC voltage of the power amplifier’s or transmitter’s power supply.
• DC current in the power amplifier or transmitter.
• Temperature of the heat sink of the power amplifier or transmitter.
• The time since the amplifier or transmitter was last shut down.
• History of faults and events.
• Indication if there is attenuation added to the front end of the power
amplifier or transmitter indicating fold back in RF power (indicates amount
of attenuation).
• Settings to change the VSWR trip point shutdown between 1.1:1 and
1.8:1.
• Settings to change the RF power units between % power (maximum of
110%) or watts.
• Summary of PCB modules and assembly numbers specific to the power
amplifier or transmitter.
A block diagram of the Display Interface PCB follows:
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