R.V.R. Elettronica PTX-LCD, User Manual

Page: 58 / 62

PTX-LCD
54 / 58 User Manual Rev. 2.3 - 18/07/07
11.7.1 Adjustments, settings and indicators
JP8 Position of panel card jumpers.
The software denotes jumper positions as follows (1 signifies a closed jumper, 0
open jumper, X any position):
-XPS -XPS -XPS -XPS -XPS 0HDQLQJ
0 0 X X X
ExPwr, ExSts and ExFrq menu disabled
1 0 X X X ExPwr and ExSts menu enabled, ExFrq menu disabled
0 1 X X X ExPwr and ExSts menu disabled, ExFrq enabled
1 1 X X X ExPwr, ExSts and ExFrq disabled
X X 0 0 0 Default parameters set in case of exciter reset:
CCIR for PLL at 10MHz
X X 1 0 0 Default parameters set in case of exciter reset: FCC
X X 0 1 0 Default parameters set in case of exciter reset:
OIRT
X X 1 1 0 Default parameters set in case of exciter reset:
Japan
X X 0 0 1 Default parameters set in case of exciter reset:
Italy
X X 1 0 1 Default parameters set in case of exciter reset: CSI
X X 0 1 1 Default parameters set in case of exciter reset:
China
X X 1 1 1 Reserved for future applications
In case of ExFrq enabled is necessary to modify the jumper JP6 on power supply,
as indicated in the following figure, in order to enabled the alternatives frequencies
that shall be used when the exciter is used as backup in a N+1 system.
11.8 CPU board
The CPU board is on the front part of the device, fixed to the panel board.
This board is the heart of the transmitter, since it manages and elaborates all the
information coming from the other boards and possibly from other devices via the
serial interface or the telemetry board.
The main characteristics of the CPU board are:
• Microprocessor: 80C552
• Eprom size: 64KBytes
• Static RAM size: 32KBytes
• Communication interfaces: RS232-RS485 and I2C Bus
• EEPROM size: 256KBytes
• Self-diagnosys Leds: 9, red