Sailor COMPACT HF SSB T2130, Technical Manual

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3 SERVICE T2130
DATA DRIVER
Test set-to: Mode 2.
A: Connect an oscilloscope, (0.5 msec/div, 5 Volt/div) to ST01, pin 6 on the Connection Board (6), ground
to ST01, pin 10.
B: Set the RE2100 to scan two frequencies, one below 3900 kHz, and the other above
4100 kHz.
One data pulse appears. The high level is approx. +21 Volt.
3.5.3.7 EEPROM’S
A: See Service Programme SP-24-0.
3.5.3.8 SP-BUS
Test set-up: Mode 1.
A: Ensure that exactly two termination jumpers are inserted in two of the units connected to the SP-Bus.
B: Switch on the power on the RE2100.
If ‘Error 20’ is NOT displayed, the SP-Bus is working.
If ‘Error 20’ appears on the RE2100, the RE2100 cannot establish the communication link to the
T2130.
C: Check the cable connection between the RE2100 and the TX-processor (3) in the T2130.
D: Ensure that jumper 1 (the leftmost) is removed on TX-processor (3).
RECEIVER
Test set:up: Mode 1.
A: Remove the SP-Bus cable from J01 on the TX-processor (3).
B: Connect an oscilloscope.
Ch 1 to the left end of L01. (2 Volt/div), ground to chassis.
Ch 2 at pin 3 on U05 (74HC08). (2 Volt/div), ground to chassis.
C: Connect a variable power supply to J01 instead of the SP-Bus, chassis as reference.
D: Vary the voltage from +5 Volt to -5 Volt and reverse. Check the trigger voltage = +/- 3 Volt +/-10%.
DRIVER
Test set-up: Mode 1.
It is assumed that the receiver is checked and found ok.
A: Connect an oscilloscope. 0.5 msec/div.
Ch 1 to U04 pin 5 as (Driver Enable). (2 Volt/div), ground to chassis.
Ch 2 to or with a ‘T’ on the SP-Bus. (2 Volt/div), ground to chassis.
B: Let the RE2100 scan two frequencies, one below 3900 kHz, the other above 4100 kHz. Remove the
aerial from RE2100.
C: Check the output levels for the driver when the TX-processor ‘answers’ the RE2100.
Levels: Positive: +4.0 up to 4.8 Volt.
Negative: -4.0 down to -4.8 Volt.
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