Sailor COMPACT HF SSB T2130 User Manual

5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS T2130
PAGE 5-9
5.3 TX-PROCESSOR (MODULE 3) PART NO. 625643
FUNCTIONAL DESCRIPTION
The TX-processor has the following main functions:
- communicates with the RE2100
- switches-in the correct lowpass filter
- sets drive level
- tunes the AT2110 to an acceptable SWR
- remembers the AT2110 relay combination for an acceptable found SWR
- protects the Power Amplifier (1) against high temperatures
- protects the Power Amplifier (1) against bad SWR
- ensures that the RF-output level of the PA-stage is in conjunction with the
present battery voltage
- activates the AT2110 RX-relay according to selected RX-frequency
These functions are implemented partially in hardware and partially in software.
The TX-processor hardware is separated in a number of circuits, referring to the diagram:
- SUPPLY VOLTAGES
- MICROCOMPUTER
- WATCH DOG & BATTERY LOW DETECTOR
- COMMUNICATION BUS DRIVER & RECEIVER (SP-BUS)
- SERIAL DEVICE BUS DRIVER & SELECTOR
- EEPROMS
- FILTER MODULE DRIVER
- A/D CONVERTER AND SURROUNDING CIRCUITS
- TELEX OPEN AND RF ON/OFF
- AT2110 BUS DRIVER
- TUNE MOTOR CONTROL
- AE-CURRENT AND Vf CONDITIONING
- OPTION SELECTIONS (JUMPERS)
SUPPLY VOLTAGES
The board is supplied with the following voltages via P06. These voltages are galvanic isolated from the
battery:
+5A General purpose 5 Volt
+5VB Back-up voltage. This supply is kept stable for a period after there has been a switch off on
the RE2100, or the battery voltage has fallen accidentally.
-5V Used for the SP-Bus driver
+15V Supply for op-amps and for the output filter (module 2).
-15V Supply for op-amps
+18V This is only used for sensing as the +5VB is generated from this supply.
+24V Sense. This voltage is only used for measuring. The +24V sense is proportional to the
Battery Voltage.
GND Common to the above supplies.
The following supply has a direct connection to the battery and is NOT galvanic isolated:
+21V Battery voltage. Supplies the circuits related to the AT2110.
0VA Return for the +21V.
9315

Sailor COMPACT HF SSB T2130 Specifications

General

Brand	Sailor
Model	COMPACT HF SSB T2130
Category	Control Unit
Language	English