Sailor RT2130 service manual

TECHNICAL MANUAL

FOR

SAILOR COMPACT HF SSB T2130

S.P. RADIO A/S

AALBORG

DENMARK

Please note

Any responsibility or liability for loss or damage in connection with the use of this product and the
accompanying documentation is disclaimed.

The information in this manual is furnished for informational use only, is subject to change without
notice, may contain errors or inaccuracies, and represents no commitment whatsoever.

This agreement is governed by the laws of Denmark.
Doc. no.: M2130GB Issue: A/0129

T2130

CONTENTS

1 GENERAL INFORMATION

1.1 INTRODUCTION 1-1

1.2 GENERAL DESCRIPTION 1-1

1.3 TECHNICAL DATA 1-2

1.4 PRINCIPLE OF OPERATION AND BLOCK DIAGRAM 1-4

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

2.1 MOUNTING POSSIBILITIES/DIMENSIONS AND DRILLING PLAN 2-1

2.1.1 INSTALLATION HINTS 2-4

2.2.2 BATTERY REQUIREMENTS FOR GMDSS 2-5

2.2.3 AERIAL AND RF GROUNDING REQUIREMENTS 2-7

2.2.4 MAIN CABLE PLANE WHEN SUPPLIED FROM 24V BATTERY. 2-11

2.2.5 MAIN CABLE PLANE WHEN SUPPLIED FROM 12V DC BATTERY,
USING N2160 12V DC TO 24 V DC CONVERTER. 2-12

2.2.6 MAIN CABLE PLAN WHEN SUPPLIED FROM AC,
USING N2161 AC TO 24V DC POWER SUPPLY.
MAIN CABLE PLAN WHEN SUPPLIED BOTH FROM AC
AND DC (N2161). 2-13

2.2.7 INSTALLATION WITH REMOTE CONTROL C2140 2-14

2.2.8 INSTALLATION WITH DSC (TELEX) RM2150 2-16

2.2.10 CONNECTIONS TO T2130 2-17

2.2.11 CONNECTIONS TO RE2100 2-18

2.2.12 CONNECTIONS TO AT2110 2-19

2.2.13 CONNECTIONS TO N2161 2-20

2.2.14 CONNECTIONS TO BATTERY CHARGER N2174 2-21

2.3 SYSTEM DESCRIPTION AND TROUBLE SHOOTING 2-23

2.3.3 SYSTEM FUNCTIONAL DESCRIPTION 2-24

3 SERVICE

3.1 MAINTENANCE 3-1

3.2 ALIGNMENT INSTRUCTIONS 3-1

3.3 PROPOSAL FOR NECESSARY MEASURING INSTRUMENTS 3-1

3.4 TROUBLE SHOOTING 3-2

3.4.1 POWER AMPLIFIER (MODULE 1) 3-5

3.4.2 OUTPUT FILTER (MODULE 2) 3-6

3.4.3 TX-PROCESSOR (MODULE 3) 3-7

3.4.4 POWER SUPPLY (MODULE 4) 3-8

3.4.5 NOT USED 3-10

3.4.6 CONNECTION BOARD (MODULE 6) 3-10

3.4.7 REPLACEMENT OF COMPONENTS 3-10

3.4.8 REPLACEMENT OF MODULES 3-10

3.5 PERFORMANCE CHECK 3-11

3.5.1 POWER AMPLIFIER (MODULE 1) 3-12

3.5.2 OUTPUT FILTER (MODULE 2) 3-13

3.5.3 TX-PROCESSOR (MODULE 3) 3-14

3.5.4 POWER SUPPLY (MODULE 4) 3-19

3.5.5 NOT USED 3-20

3.5.6 CONNECTION BOARD (MODULE 6) 3-20

3.6 ADJUSTMENT PROCEDURE 3-21

9724

3.6.1 POWER AMPLIFIER (MODULE 1) 3-21

3.6.2 ADJUSTMENT OF OUTPUT FILTER (MODULE 2) 3-21

3.6.3 ADJUSTMENT OF DRIVE LEVEL 3-21

3.7 NECESSARY ADJUSTMENTS AFTER REPAIR 3-23

3.7.1 MODULES REPLACED 3-23

3.7.2 COMPONENTS REPLACED 3-24

3.8 FUNCTION CHECK 3-25

3.8.1 FUNCTION CHECK FOR THE TRANSMITTER INSTALLED 3-25

3.8.3 BATTERY CHECK 3-25

3.8.4 OUTPUT POWER CHECK 3-25

3.8.5 SWR CHECK 3-25

3.8.6 CHECK OF POWER GAIN IN PA-MODULE (1) 3-25

3.8.7 END OF SERVICE PROGRAMME 3-25

3.9 SERVICE PROGRAMMES 3-27

3.9.1 SERVICE PROGRAMMES IN T2130 3-27

3.9.2 SERVICE PROGRAMMES RELATED TO AT2110 3-32

4 MECHANICAL DISASSEMBLING

4.1 MECHANICAL DISASSEMBLING AND MODULE LOCATION 4-1

T2130

5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS

5.1 POWER AMPLIFIER (MODULE 1) PART NO. 625641 5-1

5.2 OUTPUT FILTER (MODULE 2) PART NO. 625642 5-2

5.3 TX-PROCESSOR (MODULE 3) PART NO. 625643 5-5

5.4 POWER SUPPLY I (MODULE 4) PART NO. 625644 5-7

5.6 COMPONENT LOCATION CONNECTION BOARD MODULE 6 5-28

5.9 INTERCONNECTION CABLE PLAN 5-31

6 PARTS LIST

9724

CONTENTS

1 GENERAL INFORMATION

1.1 INTRODUCTION 1-1

1.2 GENERAL DESCRIPTION 1-1

1.3 TECHNICAL DATA 1-2

1.4 PRINCIPLE OF OPERATION AND BLOCK DIAGRAM 1-4

T2130

9724

1 GENERAL INFORMATION T2130

1 GENERAL INFORMATION

1.1 INTRODUCTION

The SAILOR Compact HF SSB T2130 is a 250W PEP SSB transmitter for the SAILOR Compact HF SSB
Programme 2000.

SAILOR Compact HF SSB Programme 2000 is a powerful, advanced, high technology short wave
communication system, which is extremely easy to operate.

Is has been developed on the basis of S. P. Radio’s many years of experience with short wave
communication equipment.

Is has the same high reliability as all SAILOR equipment is known for.

SAILOR HF SSB PROGRAMME 2000 CONSISTS OF THE FOLLOWING UNITS:

RE2100: Control unit with integral receiver and exciter.
T2130: 250W PEP SSB transmitter with integral power supply for RE2100.

Supply voltage 24V.
AT2110: 250W PEP aerial coupler for use outdoors.
N2160: 12V DC power supply for T2130.
N2161: 110/220/240V AC, 50 Hz power supply for T2130.

1.2 GENERAL DESCRIPTION

SAILOR HF SSB T2130 is an all solid state constructed microcomputer controlled SSB shortwave

transmitter.
SAILOR HF SSB T2130 covers the frequency range from 1.6 MHz to 30 MHz.
SAILOR HF SSB T2130 has an output power of 250W PEP.
SAILOR HF SSB T2130 is constructed for continuous operation.
SAILOR HF SSB T2130 has 50 ohm output impedance.
SAILOR HF SSB T2130 is able to control the automatic aerial coupler AT2110.
SAILOR HF SSB T2130 has built-in power supply for 24V DC.
SAILOR HF SSB T2130 is able to supply the transceiver RE2100.
SAILOR HF SSB T2130 has built-in protection system, so that it will not be damaged if the aerial

is open circuited or short-circuited.

9345

PAGE 1-1

1 GENERAL INFORMATION T2130

1.3 TECHNICAL DATA

(complies with SOLAS, ITU, CEPT, MPT, DOC, FTZ, KSR, FCC)

GENERAL
Frequency Range: Receiver: 100 kHz to 30 MHz

Transmitter: 1.6 MHz to 30 MHz

Modes: J3E (USB/LSB), R3E and H3E (AM)
Channel Capacity: 100 user defined quick-select channels and ITU defined channels

in the maritime bands. Each channel contains both RX and TX frequency
and mode settings.

Scanning Facilities: 10 scanning prograammes, each able to contain

128 pairs of frequencies.

Distress Call: Quick selection of 2182 kHz

Built-in two tone alarm: 1300 Hz and 2200 Hz
with a duration of 45 secs.

Operating Temperature Range: -15°C to +55°C
Frequency Stability: Better than 0.34 ppm
Primary Voltage: 24V DC - 10% +30%
Current Drain: Receiver (standby) 0.9A

Transmit voice 7A
Transmit two-tone 13A

Aerials: from 7 - 15 m

TRANSMITTER T2130
Power Output: 250W PEP ± 1.4 dB (T2130/I 240W PEP max.)
Intermodulation: better than 32 dB below PEP
Spurious Emission: better than 67 dB below PEP
Harmonics: better than 43 dB below PEP or

better than 67 dB below PEP with aerial coupler AT2110

Carrier Suppression: better than 46 dB below PEP
Audio Response: 350 Hz to 2700 Hz at -6 dB

RECEIVER RE2100
Receive System: Double conversion super heterodyne

1st IF 70 MHz. 2nd 10.73 MHz

Selectivity: J3E (SSB) 350 Hz to 2700 Hz at -6 dB

H3E (AM) ±3.3 kHz at -6 dB

PAGE 1-2

9345

1 GENERAL INFORMATION T2130
Sensitivity: J3E (SSB) <10 dB/uV for 20 dB SINAD

H3E (AM) <24 dB/uV for 20 dB SINAD

Spurious and IF Rejection: better than -70 dB
Cross Modulaton: better than 90 dB/uV (CEPT method of test)
Desensitization: better than 100 dB/uV (CEPT method of test)
AGC: less than 2 dB audio level change from 10 dB/uV to 80 dB/uV.

Fast attack, slow release time.

Intermodulation: better than 90 dB/uV (CEPT method of test)
Spurious Emission: better than 1 nW into dummy aerial
Clarifier: ±150 Hz in steps of 10 Hz
Squelch: Voice activated, opens for SINAD >6 dB
Audio Power: 5 Watt, 8 ohm, less than 10% distortion

10 Watt, 4 ohm, less than 10% distortion

AERIAL COUPLER AT2110
Power: 250W PEP
Aerials: 7 - 15m
Temperature Range: -25°C to +70°C
Tuning Time: Typically less than 2 secs (learn mode typ. 30 secs)

ACCESSORIES
Loudspeaker: H2054 see special brochure

H2074 see special brochure

Power Supplies: N2160

Input supply: 12V + 30% - 10%
For more information see the manual for N2160

N2161

Input supply: 110V - 127V - 220V - 240VAC
Input frequency: 50 - 60 Hz
For more information see the manual for N2161

Weight: RE2100: 4.5 kg

T2130: 14 kg
AT2110: 4.5 kg

9345

PAGE 1-3

1 GENERAL INFORMATION T2130

1.4 PRINCIPLE OF OPERATION AND BLOCK DIAGRAM

SAILOR Compact HF SSB T2130 is a 250W PEP transmitter in SAILOR Compact HF SSB Programme

2000. It contains following circuits.

POWER AMPLIFIER

The power amplifier is a push-pull amplifier.
The input signal from RE2100 is fed through a TX/RX switch on the output filter unit to the input of the
power amplifier. The signal is amplified to approx. 280W PEP. The bias to the pre-driver, driver, and PA
can be switched off from the TX microprocessor. When this is done, the output power will be attenuated
more than 60 dB.

OUTPUT FILTER

The output filter consists of six lowpass filters, a directional coupler, a tune/transmit switch, and a TX/RX
switch.
From the power amplifier the signal is fed to a lowpass filter, which attenuates all harmonics. Then the
signal passes a directional coupler, which gives information about the standing wave ratio to the TX­processor unit.
After the directional coupler the signal is fed to a drive/transmit switch. In position drive the output power
is fed to a 50 ohm load. This load is used to set the output power to the correct value.
After this switch the signal is fed to the TX/RX switch.
In position RX the signal from the aerial coupler AT2110 or the aerial is fed directly to RE2100.
In position TX the signal from RE2100 is fed to the input of the power amplifier and the output power is
fed to the aerial coupler AT2110 or the aerial.

TX PROCESSOR

The processor takes care of controlling the power amplifier, output filters, aerial coupler AT2110, and
communication with RE2100.
From RE2100 the TX-processor receives information about frequency and receive/transmit mode. The
TX-processor gives information to RE2100 about tuning/tune ready and attenuator setting.
During tune-up the TX-processor is controlling the aerial coupler. It tunes for best standing wave ratio
measured with the directional coupler on the output filter module.
During transmit the TX-processor is checking the temperature of the PA-transistors, supply voltage, and
stating wave ratio. From these data the TX processor calculates the max. permissible power, and then
sends this information to the RE2100, where the processor unit sets the attenuator in the exciter unit to
the correct value.

POWER SUPPLY

This unit consists of two power supplies and the AF-amplifier.
The 24V DC is first fed to a relay which switches off/on the supply to the power supplies.
One switch mode power supply is used to generate ±18V and 9V for all small signal circuits in T2130 and
RE2100. The supply for the power amplifier and the AF-amplifier passes through a serial regulator, which
limits the voltage to max. 28V.

PAGE 1-4

9345

1 GENERAL INFORMATION T2130

CONNECTION BOARD

The connection board is the interface to the aerial coupler AT2110, HF SSB RE2100, 24V mains, and
other units e.g. loudspeaker, muting of ext. receivers etc.
All input and output from ext. equipment are made through an optocoupler, a relay, or a transformer.

BLOCK DIAGRAM T2130

9345

25888B

PAGE 1-5

T2130

CONTENTS

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

2.1 MOUNTING POSSIBILITIES/DIMENSIONS AND DRILLING PLAN 2-1

2.1.1 INSTALLATION HINTS 2-4

2.2.2 BATTERY REQUIREMENTS FOR GMDSS 2-5

2.2.3 AERIAL AND RF GROUNDING REQUIREMENTS 2-7

2.2.4 MAIN CABLE PLANE WHEN SUPPLIED FROM 24V BATTERY. 2-11

2.2.5 MAIN CABLE PLANE WHEN SUPPLIED FROM 12V DC BATTERY,

USING N2160 12V DC TO 24 V DC CONVERTER. 2-12

2.2.6 MAIN CABLE PLAN WHEN SUPPLIED FROM AC,

USING N2161 AC TO 24V DC POWER SUPPLY.
MAIN CABLE PLAN WHEN SUPPLIED BOTH FROM AC
AND DC (N2161). 2-13

2.2.7 INSTALLATION WITH REMOTE CONTROL C2140 2-14

2.2.8 INSTALLATION WITH DSC (TELEX) RM2150 2-16

2.2.10 CONNECTIONS TO T2130 2-17

2.2.11 CONNECTIONS TO RE2100 2-18

2.2.12 CONNECTIONS TO AT2110 2-19

2.2.13 CONNECTIONS TO N2161 2-20

2.2.14 CONNECTIONS TO BATTERY CHARGER N2174 2-21

2.3 SYSTEM DESCRIPTION AND TROUBLE SHOOTING 2-23

2.3.3 SYSTEM FUNCTIONAL DESCRIPTION 2-24

2.3.3.1 SP BUS COMMUNICATION TO T2130 2-24

2.3.3.2 AUTOMATIC POWER SETTING 2-26

2.3.3.3 TUNING THE AT2110 2-30

2.3.3.4 TRANSMIT SUPERVISING 2-32

2.3.3.5 CALIBRATION OF THE T2130 2-34

9724

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

2.1 MOUNTING POSSIBILITIES/DIMENSIONS AND DRILLING PLAN

T2130

9630

25889B

PAGE 2-1

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

Free space for air circulation.
Ambient temperature:
Max. 40

o

C.

Weight: T2130: 14 kg

25891A

Free space for air circulation
and cable entry.

25890A

PAGE 2-2

9630

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

9630

26197A

PAGE 2-3

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

2.1.1 INSTALLATION HINTS

The HF SSB Transmitter T2130 has to be installed vertically because it is convection cooled.
To ensure free airflow inside the transmitter, at least 100 mm free space is necessary at the top

of the cover. At the bottom of the transmitter, 100 mm free space is necessary for cable lead-in.
In order to facilitate the installation, dismantle the turnable inner chassis (see the section 4.0.

MECHANICAL DISASSEMBLING). Then install the back plate with the connection board PCB
as described in section 2.1. MOUNTING POSSIBILITIES/DIMENSIONS AND DRILLING

PLAN.

When all cables have been connected according to the cable plans in question, reinstall the
turnable inner chassis and complete the installation by executing the function check (see the
section 3.8. FUNCTION CHECK).

25958D

PAGE 2-4

9630

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

2.2.2 BATTERY REQUIREMENTS FOR GMDSS

6 HOURS REQUIREMENT:

The radio batteries must have sufficient capacity to supply the radio station for 6 hours (3 hours transmit
and 3 hours standby).
When the battery is drained in 6 hours, instead of the normal 20 hours, you have add 20% to the capacity
given be the manufacture.
The three hours transmit has to be in telex mode ARQ.

Equipment Mode Current Battery capacity
T2130/DSC transmit 15A 45Ah
T2130/DSC standby 1A 3Ah

VHF/DSC transmit 7A 21Ah
VHF/DSC standby .33A 1Ah

EMERGENCY LIGHT on 1A 6Ah

GPS RECEIVER on 1A 6Ah

TOTAL 6 H O U R S 82,0Ah

+20% 98.4Ah

If you chose to make a installation without AC power supply N2161. Then you must have a battery charger
large enough to ensure, that you not will drain your batteries during transmission. That gives a charger
requirement of 25 amp.The maximum allowable charge current is 10% of the battery capacity. When the
charger can give 25 amps the battery capacity must be 250Ah.

We recommend 250Ah battery capacity.

If you chose to make a installation with AC and DC power supply N2161. Then you must have a battery
charger large enough to ensure, that you can charge your batteries, within 10 hours. That gives a charger
requirement of 10 amp.
The maximum allowable charge current is 10% of the battery capacity.

We recommend 100Ah battery capacity.

9315

PAGE 2-5

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

1 HOUR REQUIREMENT:

The radio batteries must have sufficient capacity to supply the radio station for 1 hour (0.5 hours transmit
and 0.5 hours standby).
When the battery is drained in 1 hour, instead of the 24 hours, you have add 50% to the capacity given
be the manufacture.
The half hour transmit has to be in telex mode ARQ.

Equipment Mode Current Battery capacity
T2130/DSC transmit 15A 7.5Ah
T2130/DSC standby 1A 0.5Ah

VHF/DSC transmit 7A 3.5Ah
VHF/DSC standby .33A .17Ah

EMERGENCY LIGHT on 1A 1Ah

GPS RECEIVER on 1A 1Ah

TOTAL 1 HOURS 13.7Ah

+50% 20.6Ah

If you chose to make a installation without AC power supply N2161. Then you must have a battery charger
large enough to ensure, that you not will drain your batteries during transmission. That gives a charger
requirement of 25 amp.
The maximum allowable charge current is 10% of the battery capacity. When the charger can give 25
amps the battery capacity must be 250Ah.

We recommend 250Ah battery capacity.

If you chose to make a installation with AC and DC power supply N2161. Then you must have a battery
charger large enough to ensure, that you can charge your batteries within 10 hours. That gives a charger
requirement of 3 amp.
The maximum allowable charge current is 10% of the battery capacity.

We recommend 60Ah battery capacity.

PAGE 2-6

9315

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

2.2.3 AERIAL AND RF GROUNDING REQUIREMENTS

AERIAL

Most important for good communication is the aerial. The best efficiency of the aerial will be with the aerial
coupler AT2110 mounted outdoors close to the footpoint of the aerial and the aerial placed as high and
free as possible. The aerial coupler AT2110 has to be grounded carefully.

AERIAL LENGTH

Max. length 15 metres, min. length 7 metres. Aerial length measured from insulator on AT2110 to the top
of the aerial.

If the transmitter has to work mainly on frequencies below 4 MHz a total aerial length of 12-14 metres is
recommended.

If the transmitter has to work mainly on frequencies higher than 4 MHz an 8.5 m whip aerial is
recommended.

GROUND

AT2110 has to be grounded at the footpoint of the aerial.
If a metal wheel house, weld up a pillar for AT2110 and bolt it to the pillar. This is the best way of getting

a good ground for the aerial system.
If a wooden or fibre glass boat, connect all accessible metal parts together and connect them to the aerial

coupler with a copper strip (100 x 0.5 m) making the copper strip as short as possible. You can also make
an artificial ground under the aerial as shown in example 5.

Example 1. AT2110 mounted on top of a wheel house with a whip aerial.

AT2110 has to be grounded through
the two lower mounting holes.

PAGE 2-7

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130
Example 2. AT2110 mounted on top of a wheel house with wire aerial.

4-0-25235

Example 3. AT2110 mounted on top or a mast.

AT2110 has to be grounded to the mast if a metal
mast.

If h > 8 m then the coax cable works as ground
and an acceptable performance will be obtained.

If h < 8 m then a copper strip (10 x 0.5 mm) has
to be connected from AT2110 to ground. (See
chapter GROUND).

PAGE 2-8

4-0-25236

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130
Example 4. AT2110 mounted on a sailing ship.

4-0-25237

AT2110 has to be grounded to the metal handrail or other metal parts.

PAGE 2-9

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130
Example 5. AT2110 mounted on top of building.

4-0-25239A

PAGE 2-10

9315

NOTE 4

RF IN/OUT

SP-BUS

(SP number E77.108)

H1213 trioxial cable

50 ohm’s

NOTE 5

RF Ground RF Ground

AT 2110

T 2130

DC supply wires
Note 1

(SP.number 77.509)

2 pc. RG 58/u coax

H2054/74

Max allowed lenght 30 meters

lenght 10 meters

Factory supplied cables,

RE2100

27143A

<

==

<

L

15m7

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

2.2.4 MAIN CABLE PLANE WHEN SUPPLIED FROM 24V BATTERY.

9610

PAGE 2-11

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

2.2.5 MAIN CABLE PLANE WHEN SUPPLIED FROM 12V DC BATTERY,
USING N2160 12V DC TO 24 V DC CONVERTER.

26110C

PAGE 2-12

9610

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

2.2.6 MAIN CABLE PLAN WHEN SUPPLIED FROM AC, USING N2161 AC
TO 24V DC POWER SUPPLY.
MAIN CABLE PLAN WHEN SUPPLIED BOTH FROM AC AND DC (N2161).

9610

26109B

PAGE 2-13

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

Factory supplied cables,
lenght 10 meters
Max allowed lenght 30 meters

H2054/74

2 pc. RG 58/u coax
(SP.number 77.509)

Note 1

DC supply wires

NOTE 5

50 ohm’s

H1213 trioxial cable

(SP number E77.108)

RE2100 C2140

C2140

RF GroundRF Ground

H2054/74

H2054/74

NOTE 7 multicable shielded

RG 58/u coax RG 58/u coax

10 x 0.5 multicable shielded

NOTE 4

SP-BUS

RF IN/OUT

SP-BUS SP-BUS

(SP.number E62.405)

T 2130

AT 2110

27145C

<

=

7 L 15m

<

=

2.2.7 INSTALLATION WITH REMOTE CONTROL C2140

PAGE 2-14

9610

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

PAGE 2-15

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

SP-BUS

SP-BUS

NOTE 4

RF IN/OUT

2 pc. RG 58/u coax

RM2150

21x0.25° multicable shielded

24 V DC and/or 220V AC

Supply wires

NOTE 6 multicable shielded

N2165

RF Ground RF Ground

AT 2110

RE2100

(SP number E77.108)

H1213 trioxial cable

50 ohm’s

NOTE 5

T 2130

DC supply wires
Note 1

(SP.number 77.509)

2 pc. RG 58/u coax

H2054/74

Max allowed lenght 30 metres

lenght 10 metres

Factory supplied cables,

Factory supplied cable,
lenght 1 metre

Factory supplied cable,
lenght 10 metres

27144B

<

=

7 L 15m

<

=

2.2.8 INSTALLATION WITH DSC (TELEX) RM2150

PAGE 2-16

9610

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

2.2.10 CONNECTIONS TO T2130

1-2 Mute Out 9-10 Aux AF in Tx

Relay contact closed when Transformer:
transmitting. 600 ohm, level 0 to 10 dBm
Max. ratings: 30V/2A

3-4 TX-key 11-12 Mute RX In

Optocoupler: Relay Coil:

12V

< Vin High < 22V Max. voltage: 35V, 20°C

10mA

< Iin High < 20 mA Min. voltage: 9V, 20°C

-1V

< Vin Low < 2V Coil resistance: 2250 ohm ±300 ohm

5-6 RF On/Off 13-14 Loudspeaker

Optocoupler: 8 ohm, max. power 10W

12V

< Vin High < 15V

25 mA

< Iin High < 35 mA

-1V

< Vin Low < 2V 14-16 Ext. Loudspeaker

7-8 0 dBm out

Transformer:
600 ohm, 0 dBm

8 ohm, max. power 10W

9610

PAGE 2-17

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

2.2.11 CONNECTIONS TO RE2100

25816

J03-5 J03-2

Pin no. 1 Mute RX Black Pin no. 1 Telephone Red
Pin no. 2 AF to AMP common Brown Pin no. 2 GND Yellow
Pin no. 3 Pin no. 3 Signal GND White
Pin no. 4 Pin no. 4 Mic Blue
Pin no. 5 GND Shield Pin no. 5 Mic key Brown
Pin no. 6 SP BUS interrupt Red Pin no. 6 Ext. SQ on/off
Pin no. 7 Orange Pin no. 7 Distress
Pin no. 8 Yellow Pin no. 8 Ser.+
Pin no. 9 AUX AF to TX common Green Pin no. 9 +18V
Pin no. 10 -18V Blue
Pin no. 11 +9V Violet
Pin no. 12 +18V Grey
Pin no. 13 Supply on/off White
Pin no. 14 Mic key Brown/pink
Pin no. 15 VF/AE-current Brown/yellow
Pin no. 16 AF to AMP Brown/green
Pin no. 17 0 dBm out common Brown/grey
Pin no. 18 0 dBm out White/pink
Pin no. 19 Ext. RF control White/yellow
Pin no. 20 AUX AF to TX White/green
Pin no. 21 RF on/off White/blue
Pin no. 22 GND White/grey
Pin no. 23 +9V Violet
Pin no. 24 +18V Grey/orange
Pin no. 25 -battery Red/blue

PAGE 2-18

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2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

2.2.12 CONNECTIONS TO AT2110

9-3-26101

WIRE STRIPPING FOR TRIAXIALCABLE H1213

MULTICABLE: Max. diameter ø 14.5mm

Length: Type:
0 - 50m 10 x 0.5 mm
50 -100m 10 x 1 mm

2

2

PAGE 2-19

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

2.2.13 CONNECTIONS TO N2161

26199

PAGE 2-20

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

CONNECTION BOARD (5) SIGNAL

ST1 and ST2

1 GND
2 LIVE
3 NEUTRAL

LENGTH IN

METRES

2 3.2 5 8 10 13 16 24 34

CABLE

DIMENSION

6 10 16 25 35 50 70 95 120

N2174 SIGNAL

ST2

1 GND
2 LINE
3 NEUTRAL

N2174 H2180 SIGNAL

ST7

1 1 - SHUNT
2 2 + SHUNT
3 3 -VS
4 4 MAN
5 5 26V
6 6 AUTO

N2174 SIGNAL

ST6 ST4 ST10

1 1 1 - VS
2 2 2 + VS
3 3 3 - SHUNT
4 4 4 + SHUNT

LENGTH IN

METRES 8 13 22 30 40

CABLE

DIMENSION

10 16 25 35 50

LENGTH IN

METRES

2.5 4 6 8 12

CABLE

DIMENSION

16 25 35 50 70

N2174 SIGNAL

ST4 ST2 ST8

1 1 1 -TS
2 2 2 +TS

-

+ +

-

N2174

BATTERY

(MASTER)

-

+

+

----

+ ++++++

-

VS SHUNTVSTX TX N2174 N2174 VHF LYS AUXAUXHF

H2180

BATTERY

CHARGER

21
21

18

220V AC

MAINS INPUT.

19

20

26

22
22

12

12

H2182

5-0-26446

28543

ST6

ST2

ST3

ST7

ST4

ST1

P5 P6

P8P7

OUTPUT

2.2.14 CONNECTIONS TO BATTERY CHARGER N2174

CABLE 9

MAINS TO N2171:

220V MAINS:Current: approx 6 Amp.

Mains fuse min. 10 Amp.
3 x 1.5 mm

2

max. length 12 metres

110V MAINS:Current: approx 12 Amp.

Mains fuse min. 16 Amp.

2

3 x 2.5 mm

max. length 10 metres

CABLE 12

BATTERY TO T2131:

When N2170 is in a separate cabinet.

Use following cable: 2.5 mm² max. length
10 metres.

When N2170 is in the same cabinet as T2131.

Use cable as shown in the table bellow:
Current consumption: 50 Amp.

CABLE 19

N2174 TO H2180:

Multicable: 6 x 0.75 mm2 max. length 15 metres

2

Multicable: 6 x 1.5 mm

max. length 30 metres

CABLE 20

N2174 TO H2182/H2183 (SHUNT):

4 x 1.0 mm2 max. length 10 metres

2

4 x 2.5 mm

max. length 25 metres

CABLE 18

MAINS TO N2174:

220V MAINS:Current: approx 8 Amp.

Mains fuses 16 Amp.
3 x 1.5 mm

2

max. length 12 metres

110V MAINS:Current: approx 16 Amp.

Mains fuses 25 Amp.
3 x 2.5 mm2 max. length 10 metres

CABLE 21

N2174 TO H2182/ (BATTERY):

+ BATT. and - BATT. cable dimensions in mm

2

Current 30A

CABLE 22

H2182 to battery:

+ BATT. and - BATT. Cable dimensions in mm
Current approx. 70A

2

CABLE 26

N2174 TO H2182/H2183
(Temperature sensor):

Multicable: 2 x 0.5 mm

2

max. length 50 metres

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PAGE 2-21

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

ST4

ST7

ST3

ST6 ST5

P12 P13 ST2

- +

CONNECTIONBOARD
626446 (MODULE 3)

+ SHUNT

- SHUNT

- VS

+ VS

BATTERY

(H2182)

-

+

SHUNT

28223

- SHUNT
+ SHUNT

- VS

AUTO

26V
MAN

4

3

2

1

6

5

J1

TO H2180

ME1 ME2

ON

OFFS1

S2 MAN

AUTO

: - VS

: - SHUNT
: + SHUNT

: MAN
: 26V
: AUTO

PIN 5
PIN 6

PIN 3
PIN 4

PIN 2

PIN 1

+

A

+

V

D1

D2

P1

1

6

5

2

3

4

H2180

AC IN

CABLE 18

TO EXT.ALARM

N2174

BATTERY CHARGER

AC CABLE

INPUT CABLE

TP H2180

TO TEMP. SENSOR

CABLE 19

TO H2182 OR SHUNT

AUX. OUTPUT/6A

-

TO BATTERY +TO BATTERY

CABLE 20

BLACK

RED

CABLE 27

CABLE 26

CABLE 21

CABLE 21

P10

ST2

P2P11

P9

ST5ST6

ST4

ST7

ST3

ST1

P6P5

P7 P8

P1

28117A

26446

CABLE 29

CONNECTIONS TO BATTERY CHARGER N2174

PAGE 2-22

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2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

2.3 SYSTEM DESCRIPTION AND TROUBLE SHOOTING

ERROR MESSAGES

The error messages are displayed in the upper part of the display in the RE2100.
Table 1 indicates the possibly faulty units. An asterisk in parenthesis indicates the alternative unit where
the error also may be found.

Table 1

ERROR RE2100 T2130 AT2110

70 * *
71 * *
72 * (*)
73 (*) *
74 *
75 (*) *
76 *
77 *
78 *

The error messages numbered from 70 to 78 are generated by the TX-processor and mainly related to
the T2130 and the AT2110. For the detailed error description please refer to the section 3.4.1.

REPLACEMENT OF COMPONENT.

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PAGE 2-23

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

2.3.3 SYSTEM FUNCTIONAL DESCRIPTION

This section describes mainly the overall functions of the software in the T2130.
The main functions are described in sections, where section 2.3.3.1. SP-BUS COMMUNICATION TO
2130 is a common section to be read in conjunction with the others.
In order to have the full understanding of the mode of operation of the T2130, section 2.3.3. SYSTEM
FUNCTIONAL DESCRIPTION has to be read together with section 5. CIRCUIT DESCRIPTION.
This section describes the following functions:

- 2.3.3.1 SP-BUS COMMUNICATION TO T2130

- 2.3.3.2 AUTOMATIC POWER SETTING

- 2.3.3.3 TUNING THE AT2110

- 2.3.3.4 TRANSMIT SUPERVISING

- 2.3.3.5 CALIBRATION OF THE T2130

2.3.3.1 SP BUS COMMUNICATION TO T2130

The SP-Bus is a time-multiplexed serial data bus. The RE2100 is the master and the T2130 is one of
several slaves. The T2130 is assigned a given slave address. RE2100 initiates and controls all
communication to the T2130. This means that all activities performed in T2130 is controlled by the
RE2100.

The T2130 may receive a number of commands according to the expected action in the T2130. When the
T2130 has received a message it must replay immediately. The T2130 has four different options to answer
the RE2100:

A: The received command is understood and is executed.
B: The received command is understood and T2130 is busy executing the command.
C: The received command is understood and is executed. The T2130 has information for the

RE2100.

D: A communication error is detected. The command is not executed. The error can be a parity

error or a message length error.

The answer options A, B, and C may be followed by information related to the specific command. If the
T2130 does not answer the RE2100, the RE2100 is repeating the command a number of times.
If the T2130 does still not answer, an error (Error 20) will occur in the display in the RE2100.

COMMANDS AND ANSWERS.

In the following the commands to the T2130 and the answers from T2130 are described.

SYNCRONIZE/STATUS AND ERROR CODE

This command/answer is used in two situations:

PAGE 2-24

9315

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

- When the power has been switched on at the RE2100, the RE2100 detects the existence of possible

slaves.

- When the T2130 has detected an error the T2130 has answered the previous message with the answer

option (C). This results in a synchronized message from the RE2100.

RECEIVER FREQUENCY

Whenever the received frequency has been changed at the RE2100, the frequency is sent to the T2130.
The T2130 ensures that a transformer is switched in at receiver frequencies below 4000 kHz and switched
out at frequencies above 4000 kHz.

KEY

This command is sent continuously to the T2130 when the handset key is activated at the RE2100. The
first time it is sent the command is followed by the actual transmitter frequency and the selected mode
(telex etc.) at the RE2100. The answer is option (A). The following commands are sent without associated
data. There are two different answers depending on the state of the T2130. In both states the T2130 has
the full control of the step attenuator placed in the Exciter Unit (4) in the RE2100.

- State one. Indicates that the T2130 and the AT2110 are NOT ready to transmit.

The answers consist of the answer option (B) associated with an absolute step.
The duration of this state is given by the duration of the automatic power setting and the tuning of the
AT2110.

- State two. The T2130 and the AT2110 are ready to transmit.

The answers consist of the answer option (A) associated with an absolute step.
This state continues until the key is released and the ‘Stop’ command is sent from the RE2100.

TUNE

This command is a subset of the ‘Key’ command. Only state one is performed followed by the ‘Stop’
command. The command is only sent from the RE2100 when the ‘TX’ and ‘Tune’ keys are activated.

DUMMY LOAD KEY

This command is equal to the ‘Key’ command except for the RF output power.
The RF output power is delivered to the AT2110 built-in dummy load instead of the connected aerial.

DUMMY LOAD TUNE

This command is equal to the ‘Tune’ command except for the RF output power.
The RF output power is delivered to the AT2110 built-in dummy load instead of the connected aerial.

STOP TUNE/KEY

This command always terminates the above mentioned 4 variants of the ‘Tune’ and ‘Key’ commands. The
answer is option (A). The command is sent from the RE2100 at one of the following events:

9315

PAGE 2-25

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

- When the handset key is released after a transmit period.

- When the T2130 is ready to transmit after the ‘TX’ and ‘Tune’ keys have been activated.

- When the ‘Enter/Stop’ key is pressed while the Automatic Power setting or the tuning of the AT2110
takes place.

OPEN AERIAL

This command sets the relays in the AT2110 so that the aerial is disconnected from the HF SSB
radiotelephone.

SERVICE

This command is always given associated with a service subcommand. There are several service
subcommands, each corresponding to a given Service Programme. The answer consists of option (A) or
(B) followed by 5 ASCII characters which are displayed in the lower part of the display in the RE2100.

2.3.3.2 AUTOMATIC POWER SETTING

MOTIVE FOR THE AUTOMATIC POWER SETTING

The automatic setting of the power level is done to ensure the maximum RF-level out of the transmitter
T2130, regardless of

- variations in the RF-level out of the RE2100 exciter,

- RF-loss due to long cables between RE2100 and T2130,

- variations in the gain in the Power Amplifier from one to another,

- variations in the gain in the Power Amplifier due to the frequency,

- variations in the loss in the Output Filter module from one to another,

- variations in the loss in the Output Filter module due to the frequency,

- battery voltage supplying the Power Amplifier.
(variations in the DC loss in the Power Supply).

PRINCIPLES FOR THE AUTOMATIC POWER SETTING

The RF-level out of the RE2100 exciter is increased in steps until a predetermined maximum allowable
Vforward level out of the Output Filter (2) is reached.

EVENTS FOR STARTING THE AUTOMATIC POWER SETTING

The automatic power setting is done because of one of the following events:

- The TX-frequency is changed and the key on the handset has been activated.

- The TX-Tune key on the keyboard is pushed.

- The time elapsed since latest automatic power setting is more than approx. 4 minutes.

NECESSARY SIGNALS AND PARAMETERS

- Vforward.
The RF-level is measured by SWR-detector circuitry on the Output Filter (2) and is mentioned as
‘Vforward’. Vforward is measured by the TX-processor (3) by means of an analog to digital converter.

PAGE 2-26

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2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

- Vforward maximum.
The predetermined maximum allowable Vforward level is composed of a number of parameters. This
composition of the maximum allowable Vforward is described in a section below. In the following it is
assumed that the maximum allowable Vforward has already been calculated.
The predetermined maximum allowable Vforward level will in the following sections be mentioned as
Vf_ max (Vforward maximum).

- RF level control.
A digitally controlled step attenuator with 64 steps, each step is approx. 0.3 dB, is placed in the Exciter
Unit (4) in the RE2100. During the automatic power setting the TX-processor (3) in the T2130 has the
full control of the step attenuator via the SP-Bus and the Processor Module (5) in the RE2100.

FUNCTIONAL DESCRIPTION OF THE AUTOMATIC POWER SETTING

When the automatic power setting is about to start the step attenuator in the Exciter Unit (4) is preset to
step 43 by the answer to the first ‘Tune’ command.
The automatic power setting may now take place in 2 or 3 states, depending on the initial measured
Vforward (step 31) related to the Vf_max.

- State 1 is always run as the first state.

- State 2 is run when the RF-level has to be increased one or several steps.

- State 3 is always run as the last state in the automatic power setting.

STATE 1

The Vforward level (step 43) is measured by the TX-processor and compared to 4 different levels:

- A minimum level.
If Vforward is lower, then an error is generated. The Vforward level is too low.

- Vf_max - 0.6 dB.
If Vforward is lower, then a number of steps is calculated for increasing the RF-level out of the Exciter.
The calculation is described below. The automatic power setting continues at state 2.

- Vf_max.
If Vforward is lower or equal to, then the step is increased with one, The automatic power setting
continues at state 2.

- Vf_max + 0.3 dB.
If Vforward is lower, then the automatic power setting
continues at state 3. Else an error is generated. The Vforward level is too high.

STEP CALCULATION

In order to reduce the time used for the automatic power setting the RFlevel is increased a number of steps
initially. The number of steps ‘n’ is calculated in the following way:

Vf_max = 10 ((A / 20)) * n

------------

Vforward
Where A is the resolution of the step attenuator in dB. Theoretically A should be = 0.3 dB/step. However,

there is some compression in the amplifiers, etc. involved. Iterations have shown that A = 0.43 dB/step
is suitable in order to reach the correct power level in an acceptable time without overshooting.

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PAGE 2-27

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

STATE 2

In this state the RF-level is increased one step at a time and compared to 2 different levels:

- Vf_max.
If Vforward is higher then the automatic power setting continues at state 3.

- The previous measured Vforward + 0.12 dB.
If Vforward is lower then the automatic power setting continues at state 3.
Else state 2 is repeated.
This specification compared to the previous Vforward + 0.12 dB is performed to ensure that the
increasing of the Vforward is stopped if there has been an increase less than 0.12 dB. This may occur
when the Power Amplifier (1) has begun cumpressing the signal. The compressing of the signal gives
distortion and reduces the intermodulation.

STATE 3

This state is run when the Vforward was measured to be one step too high. RF-level is reduced one step
because the previous level was too high.
Depending on which event has started the automatic power setting the RFlevel is reduced further. If an
AT2110 is in the system, (jumper 5 is not inserted) Vforward is further reduced 20 steps (approx. 6 dB)
in order to protect the Power Amplifier (1) while tuning the AT2110.

CALCULATING VFORWARD MAXIMUM

Vf_max is compounded of 4 parameters:

- A value (Vf_max1) calculated from the Vforward - Vbattery equation (the graph in fig. 1).

- An addition (Vf_max2) as a result of the calibration. The calibration procedure is described in section

2.3.3.5 CALIBRATION OF THE T2130

- An addition (Vf_max3) related to the frequency.

- A reduction (Vf_max4) because of reduced power.

Vf_max is found in the following way:

- Vfmax5 = Vf_max1 + Vf_max2 + Vf_max3

- Vf_max = the lowest of Vf_max4 and Vf_max5

In the following the parameters are described separately.

Vf_max1 (VFORWARD - VBATTERY EQUATION)

The Vforward maximum is depending on the present Vbattery. The graph in fig. 1 shows the coherence
of the Vbattery and the maximum allowable Vforward.

PAGE 2-28

9315

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

26190

Fig. 1. Nominal values of Vbattery, Vforward maximum.

The graph consists of two linear parts. Part 1 is valid for a Vbattery < 26.5 Volt and has the following
equation:

Vf_max1 = 0.33 * Vbattery + 0.20 (Volt)

Part 2 is valid for a Vbattery >= 26.5 Volt and has the following equation:

Vf_max1 = 9.00 (Volt)

Vbattery is measured by the TX-processor. This is described in section 2.3.3.5. CALIBRATION OF THE

T2130.

Vf_max2

The addition due to the result of the calibration may be either positive or negative. The principles for the
calibration of the T2130 are described in section 2.3.3.5. CALIBRATION OF THE T2130.

Vf_max3

This addition is made in order to reduce the variations in the gain in the Power Amplifier (1) and the
variations in the loss in the Output Filter (2).
The addition may either be positive or negative. There are 6 different additions which may be added. One
for each frequency range covered by the lowpass filters in the Output Filter Module (2). The addition for
the frequency range 1.6 - 2.599 MHz is always 0 as 1.6 MHz is used as a reference.

Vf_max4

This is in fact not an addition. It is possible to reduce the RF PEP power out of the transmitter in a few steps
by means of the Service Programmes.
When the power is not reduced the Vf_max4 has a value which is always higher than Vf_max5.
When the power is reduced the Vf_max4 has a fixed value corresponding to the selected PEP power level.

9315

PAGE 2-29

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

2.3.3.3 TUNING THE AT2110

The tuning may take place in 3 different procedures:

- Uptune, where a tuning is done from basic data.

- Retune, where the tuning is done from data saved at the latest Uptune.

- No tune, which is done when there is no AT2110 in the system (jumper 5 is inserted).

UPTUNE PROCEDURE

This is the basic tune procedure for tuning the AT2110. The conditions for an uptune procedure are the
following:

- ’TX TUNE’ is entered on the keyboard on the RE2100.

- The frequency has not been tuned before. This means that there is no valid data in the EEPROM’s
for the specific 200 kHz band in which the frequency is.

- The retune procedure did not work out. The retuning could not be done with the data saved in the
EEPROM’s. The measured Standing Wave Ratio (SWR) was too high. The aerial conditions may have
been changed since the latest uptune of a frequency in the 200 kHz band concerned, or the data saved
in the EEPROM’s are deleted by use of the Service Programmes.

The uptuning may take place in up to 6 states. The states are sequently executed until the uptuning is
accepted.

1. The relays in the AT2110 are set so the RF-signal is fed straight through the coupler. This means that
no resonance (inductance, (L)) or load (capacitance, (C)) is active.If the SWR (Standing Wave Ratio)
is better than or equal to 2.0 the tuning of the aerial is accepted. A possible previously saved
combination is deleted from the EEPROM’s.
If jumper 4 on the TX-processor (3) is inserted this ‘signal straight through’ combination will NOT be
tested.

2. A sequence of shifting the resonance and the load in a certain pattern is run through.
For each frequency band (200 kHz) a number of combinations of fixed resonance values (L) and fixed
load values (C) are switched in.
For every combination of a fixed resonance and a fixed load the variable capacitor is run through the
working range.
Within the working range of the variable capacitor the SWR is measured and compared continuously
to certain limits.

The first combination always contains the highest value of the resonance (most L is in) and the lowest
value of the load (least C is in).
The next combinations contain each a decreasing value of the resonance and the lowest value of the
load.

PAGE 2-30

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2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130
When the lowest value of resonance has been tested the next higher value of load is switched in and all

the resonance values are tested again.
The variable capacitor is activated by the tune motor MO1. The motor may run at high speed or al low

speed. In the following mentioned as ‘high tune speed’ and ‘low tune speed’.
With the tune speed high the SWR is measured and compared continuously to the following limits and
different actions may take place:

1.0 < SWR <= 1.5.
The actual combination of resonance and load is kept and the tune speed is changed to low.
The variable capacitor is run through its variation range again. When the SWR limit is passed
again, the tune motor is stopped immediately and the tuning is accepted. The found combination
of resonance and load and the SWR limit are saved in the EEPROM’s for a later retune
procedure.

1.5 < SWR <= 2.0
The actual combination of resonance and load is remembered by the processor in order to tune
with the low speed later.

2.0 < SWR <=2.5.
The actual combination of resonance and load is remembered together with a flag indicating that
the SWR is in the range 2.0 < SWR <= 2.5 by the processor in order to tune with the low speed
later.

3. If no combination could give an SWR <= 1.5 the remembered combinations giving an SWR <= 2.0 are
tested at low tune speed.
The SWR is measured and compared to the following limits and different actions take place:

1.5 < SWR <= 1.7.
The tune motor is stopped immediately and the tuning is accepted.
The found combination of resonance and load and the SWR limit are saved in the EEPROM’s
for a later retune procedure.

4. If no combination could give an SWR <= 1.7 the remembered combinations giving an SWR <= 2.0 are
tested again at low tune speed.
The SWR is measured and is now compared to the following limit:

1.7 < SWR <= 2.0
The tune motor is stopped immediately and the tuning is accepted.
The found combination of resonance and load and the SWR limit are saved in the EEPROM’s
for a later retune procedure.

5. If no combination could give an SWR <= 2.0 the remembered combinations giving an SWR in the range

2.0 < SWR <= 2.5 are tested at low tune speed.
The SWR is measured and is compared to the following limit:

SWR <= 2.5.
The tune motor is stopped immediately and the tuning is accepted.

6. If no combination could give an SWR <= 2.5 the AT2110 relays are set to feed the RF-signal straight
through the coupler and this is then accepted as an uptune. When the transmitter is keyed the RF­power is reduced accordingly to the actual SWR.

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PAGE 2-31

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

RETUNE PROCEDURE

This is the tune procedure normally used. The conditions for a retune procedure are the following:

- A frequency within the same 200 kHz band has been tuned previously to an SWR
<= 2.0. This means that valid data are read out of the EEPROM’s and the aerial conditions have not
changed essentially.

The data saved in the EEPROM’s for a retune are divided into 142 elements. Each element equals a
frequency band covering 200 kHz. For each 200 kHz band a relay combination and a code for the tuned
SWR are saved.

The principles for a retune procedure are described in the following.
Data concerning the actual 200 kHz are read out of the EEPROM’s and validated.
If the code for the SWR is not acceptable an uptune procedure is started immediately.
If the code for the SWR is valid then the codes for the SWR and the relays are converted. The specific
relays are activated.

With the tune speed low the SWR is measured and compared continuously to the limit which is read out
from the EEPROM’s.
The SWR limit is 1.5 or 1.7 or 2.0. The retune procedure will then always try to tune to the same SWR
limit as the untune procedure. If however, this is not possible the retune will try to tune to the next higher
limit. If it is not possible to tune to an SWR <= 2.0 the uptune procedure is started immediately.

NO TUNE PROCEDURE

This procedure is run only when there is no AT2110 connected to the T2130. In fact the jumper 5 on the
TX-processor (3) must be inserted.

The only purpose for this routine is to measure the SWR and if the SWR <= 2.0 inform the RE2100 and
the user.

2.3.3.4 TRANSMIT SUPERVISING

The motives for the supervising are as follows:

- Protection of the Transmitter T2130 against high SWR (bad aerial conditions).

- Protection of the power transistors in Power Amplifier (1) against damage caused by high temperature.

- Ensuring that the transmitter T2130 does always deliver maximum RF-power with a minimum of
intermodulation regardless of variations in the battery voltage supplying the Power Amplifier (1).

When the Transmitter T2130 is keyed, certain parameters are watched by the TX-processor (3) and action
is taken if the change of the parameters is essential. The following parameters are watched:

- SWR, Standing Wave Ratio

- Supply voltage to the Power Amplifier (1)

- Temperature in the Power Amplifier (1).

In general a change of any of the watched parameters causes a control of the RF-level input to the Power
Amplifier.
While the transmitter is keyed the TX-processor has the full control of the digitally controlled step
attenuator in the Exciter Unit (4) in the RE2100 via the SP-Bus and the Processor Unit (5) in the RE2100.

PAGE 2-32

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2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130
Each of the watched parameters results in a number of steps. The steps are simply added to the step found

when the Automatic Power Setting was performed.

act_step = APS_step + n1 + n2 + n3

Where: act_step = actual step for the attenuator

APS_step = the step found at the Automatic Power Setting
n1 = deviation step related to SWR
n2 = deviation step related to Temperature
n3 = deviation step related to Battery Voltage

The subsections below describe each of the parameters watched.

SWR WATCHING

When the T2130 is transmitting, the SWR is continuously watched. This means in terms that the TX­processor (3) measures the Rho approx. 2500 times per second.

Note: Rho and SWR are two expressions describing the same physics.

SWR - 1 1 + Rho

Rho = ------------ SWR = ------------

SWR + 1 1 - Rho
The measured Rho is compared to two limits.
If SWR > 2.0 (Rho > 0.333) then a calculation takes place. The result of the calculation gives a number

of 0.3 dB steps with which the RF-signal has to be reduced. The number of steps n1 is given by:

(Rho - 0.333) * 18

n1 = ------------------------ (n1 cannot be negative).

0.3

If SWR > 5.0 then the error message ‘Bad SWR’ is generated. The operator is informed when the key is
released.

TEMPERATURE WATCHING

The temperature at the power transistors in the Power Amplifier (1) is measured 4 times per second.
The measured temperature is compared to two limits. If the temperature is above 98o Celcius a calculation
takes place.
The result of the calculation gives a number of 0.3 dB steps with which the RF-signal has to be reduced.
The number of steps n2 is given by:

Measured temperature - 98°C

n2 = ----------------------------------------- (n2 cannot be negative)

2
This means that a temperature increase of 20°C to 118°C reduces the RF power approx. 3 dB.
If the temperature is above 118° Celcius the Power Amplifier (1) is blocked and the RF-power is reduced

further approx. 60 dB. An error message is generated and when the key is released the operator is
informed.
When the temperature has fallen to 100° Celcius the Power Amplifier (1) is opened again.

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PAGE 2-33

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

SUPPLY VOLTAGE WATCHING

The battery voltage is measured 4 times per second. The battery voltage is measured as described in
section 2.3.3.5. CALIBRATION OF THE T2130.
A Vforward maximum (Vf_max) is found as described in section 2.3.3.2. AUTOMATIC POWER
SETTING. The Vf_max is compared to the maximal Vforward (Vf_max_tun) found when the Automatic
Power Setting was performed. When there is a certain difference (in dB) the step attenuator is controlled
accordingly.
As there is a certain compressing of the RF-signal in the Power Amplifier (1) a certain change (in dB) of
the Vf_max (due to a change in the battery voltage) will give a small change of the input RF-signal to the
Power Amplifier. This means that if the supply voltage has increased so much that the Vf_max is 0.6 dB
higher than the Vf_max found at the Automatic Power Setting, the RF-input level must be increased by

0.3 dB.
The number of steps (n3) the step attenuator has to be changed due to change in the supply voltage is
calculated in the following way:

(Vf_max_tun - Vf_max) / Vf_max_tun

n3 = -------------------------------------------------- (n3 can be negative,

10(0.6/20) - 1 zero, or positive).

In order to prevent fast oscillating in the automatic control of the step attenuator a decrease of the step
due to higher battery voltage is delayed a few seconds.

2.3.3.5 CALIBRATION OF THE T2130

In practice the calibration is done by means of a Service Programme. Please refer to the Service
Programmes. In the following the calibration is described functional.

MOTIVE FOR THE CALIBRATION

The calibration is done in order to eliminate tolerances in specific components related to the measuring
of the battery voltage and the Vforward voltage.

PRINCIPLES FOR THE CALIBRATION

The principle for the calibration is as follows. With a given battery supply voltage the RF-output is
increased until a specific distortion is reached. The battery voltage and the corresponding Vforward are
measured and the differences between the measured and the nominal values are calculated.

NECESSARY SIGNALS AND PARAMETERS

- Vbattery. This is measured by the TX-processor (3). The technique used by the TX-processor to
measure the 24 Volt battery is discussed in a separate subsection below.

- Vforward. This is measured by the TX-processor (3).

- Nominal values. This covers the coherence between the battery supply voltage and the maximum
allowable Vforward. For the description of the graph please refer to the subsection ‘Calculating
Vforward maximum’ in section 2.3.3.2. AUTOMATIC POWER SETTING.

PAGE 2-34

9315

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130

26190
Fig. 2. Nominal values of the Vbattery, Vforward maximum.

FUNCTIONAL DESCRIPTION OF THE CALIBRATION

A Vbattery = 24,000 Volt must be present at the ‘+’ and the ‘-’ 24 Volt battery terminals on the Connection
Board (6).
The Service Programme for calibrating ensures that the two tone RF-signal is present at the internal
dummy load in the T2130. The level of the two RF-signal is now increased by use of the keyboard on the
RE2100 until specific requirements for the intermodulation is just fulfilled.
At this point the TX-processor is ordered to measure the actual battery voltage and the actual Vforward
voltage. When this is done some calculations take place.
Concerning the Vbattery an offset is calculated. This offset is the difference between the nominal Vbattery
and the meaured Vbattery.
Concerning the Vforward an offset is calculated. The offset is mentioned in the subsection above as
Vf_max2.
Vf_max2 is the difference between the nominal value of Vf_max1 at Vbatt = 24,000 Volt and the measured
Vforward.

MEASURING THE BATTERY VOLTAGE

As the battery is galvanic isolated from the ground it is not possible for the TX-processor to measure the
battery voltage direct.
The TX-processor (3) is measuring the voltage ‘+24V Sense’ and an offset is added. The offset added
is a result of the calibration described in section 2.3.3.5. CALIBRATION OF THE T2130.
In the Power Supply (4) the ‘+24V Sense’ is generated.
The DC to DC converter in the Power Supply is working after the ‘Pulse Width Modulation’ principle. The
peak voltage on the secondary turn of the isolation transformer is then proportional to the voltage switched
on the primary turn. The ‘+24V Sense’ is then proportional to the battery voltage.

9315

PAGE 2-35

2 INSTALLATION MECHANICAL HF SSB TRANSMITTER T2130
In the Service Programmes the measured ‘+24V Sense’ is converted to voltage and read out to the display

on the RE2100.
The relation between the battery voltage and the ‘+24V Sense’ is determined empirical and is given by
the following equation:

‘+24V Sense’ + Cal_offset = Vbattery * 1.31 - 0.95 (Volt)

giving:

’24V Sense’ + Cal_offset + 0.95

Vbattery = ----------------------------------------- (Volt)

1.31

PAGE 2-36

9315

CONTENTS

3 SERVICE

3.1 MAINTENANCE 3-1

3.2 ALIGNMENT INSTRUCTIONS 3-1

3.3 PROPOSAL FOR NECESSARY MEASURING INSTRUMENTS 3-1

3.4 TROUBLE SHOOTING 3-2

3.4.1 POWER AMPLIFIER (MODULE 1) 3-5

3.4.2 OUTPUT FILTER (MODULE 2) 3-6

3.4.3 TX-PROCESSOR (MODULE 3) 3-7

T2130

3.4.4 POWER SUPPLY (MODULE 4) 3-8

3.4.5 NOT USED 3-10

3.4.6 CONNECTION BOARD (MODULE 6) 3-10

3.4.7 REPLACEMENT OF COMPONENTS 3-10

3.4.8 REPLACEMENT OF MODULES 3-10

3.5 PERFORMANCE CHECK 3-11

3.5.1 POWER AMPLIFIER (MODULE 1) 3-12

3.5.2 OUTPUT FILTER (MODULE 2) 3-13

3.5.3 TX-PROCESSOR (MODULE 3) 3-14

3.5.4 POWER SUPPLY (MODULE 4) 3-19

3.5.5 NOT USED 3-20

3.5.6 CONNECTION BOARD (MODULE 6) 3-20

3.6 ADJUSTMENT PROCEDURE 3-21

3.6.1 POWER AMPLIFIER (MODULE 1) 3-21

3.6.2 ADJUSTMENT OF OUTPUT FILTER (MODULE 2) 3-21

3.6.3 ADJUSTMENT OF DRIVE LEVEL 3-21

3.7 NECESSARY ADJUSTMENTS AFTER REPAIR 3-23

9724

T2130

3.7.1 MODULES REPLACED 3-23

3.7.2 COMPONENTS REPLACED 3-24

3.8 FUNCTION CHECK 3-25

3.8.1 FUNCTION CHECK FOR THE TRANSMITTER INSTALLED 3-25

3.8.3 BATTERY CHECK 3-25

3.8.4 OUTPUT POWER CHECK 3-25

3.8.5 SWR CHECK 3-25

3.8.6 CHECK OF POWER GAIN IN PA-MODULE (1) 3-25

3.8.7 END OF SERVICE PROGRAMME 3-25

3.9 SERVICE PROGRAMMES 3-27

3.9.1 SERVICE PROGRAMMES IN T2130 3-27

3.9.2 SERVICE PROGRAMMES RELATED TO AT2110 3-32

9724

T2130

3 SERVICE

3.1 MAINTENANCE

PREVENTIVE MAINTANANCE

If SAILOR T2130 has been installed in a proper way the maintenance can be reduced to an overhaul at
each visit of the service staff.
Then inspect the set, the antenna, cables, and plugs for mechanical damages, salt deposits, corrosion,
and any foreign material.
Owing to its traditional structure, the SAILOR T2130 has a long lifetime, but it must always be carefully
checked at intervals not exceeding 12 months - dependent on the conditions under which the set is
working.

Along with each set a TEST-SHEET is delivered in which all the measurements, made in the test
department of the factory, are listed. If the control measurings made in the service workshop should not
show the same values as those listed in the test-sheet, the set must be adjusted as specified in chapter

3.6. ADJUSTMENT PROCEDURE.

3.2 ALIGNMENT INSTRUCTIONS

INTRODUCTION

The measuring values indicated in chapter 5. CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS
are typical values and as indicated it will be necessary to use instruments in absolute conformity with the
below list:

3.3 PROPOSAL FOR NECESSARY MEASURING INSTRUMENTS

Tone Generator type PM5107 PHILIPS
Electronic Multimeter type PM2505 PHILIPS
RF Directional Wattmeter Model 43 BIRD
250W Load with type BIRD
Oscilloscope type PM3216 PHILIPS
Dummy load 50 ohm/250W
Power Supply 21-32V, 20A

9822

PAGE 3-1

3 SERVICE T2130

3.4 TROUBLE SHOOTING

SAILOR Compact HF SSB system has built-in self-diagnostic service system, which is a great help in
locating a fault.

When a fault is detected an error message will be displayed in the RE2100 display.
The following description will help you to find the defective unit or module.
Trouble-shooting should only be performed by persons with sufficient technical knowledge, who have the

necessary measuring instruments at their disposal, and who have carefully studied the operation
principles and structure of SAILOR T2130.

The first thing to check is whether the fault is somewhere in the antenna circuit or power source.
When measuring in the units, short-circuits must be avoided as the transistors would then be spoiled.

LOCATING THE FAULTY MODULE

ERROR MESSAGES, DESCRIPTION

The error messages displayed in the RE2100 display are technically described in the following.

70. MOTOR CIRCUIT ERROR (AT2110)

An error is detected in the circuitry controlling the tune motor MO1 in the AT2110. The TX-processor has
not detected the ‘180o pulse’ from the AT2110.

The error may be one of several possibilities:
If the tune motor MO1 starts running immediately after the power is switched on at the RE2100:

o

- Check the level of the ‘180

PULSE/AE-CURRENT’ at ST01 pin 3, on the Connection Board (6) in

T2130.

If the level is high (approx. 15 Volt):
The error is probably in the AT2110:

- Check the ‘180

- Check the ‘180

o

PULSE/AE-CURRENT’ connection between T2130 and AT2110.

o

PULSE/AE-CURRENT’ connection in the AT2110.

- Check the light in the optocoupler OC01 on the Main Board (1) in the AT2110. This may be done
by measuring the voltage drop across the resistor R26 in the Connection and Interface module
(3) in the AT2110.

If the level is low:
The error is probably in the T2130:

o

- Check the ‘180

PULSE/AE-CURRENT’ connection between the Connection Board (6) and the

TX-processor (3) in the T2130.

If the tune motor MO1 does NOT start running immediately after the power is switched on at the RE2100:

- Check the voltage at ST01 pin 7 when the power is tuned on at RE2100. The voltage should be approx.
16 Volt.

PAGE 3-2

3 SERVICE T2130

If the 16 Volt is ok:
The error is probably in the AT2110:

- Check the connection to the tune motor MO1 in AT2110.

- Check the ‘Motor +’ connection between the T2130 and the AT2110.
If the 16 Volt is NOT present:

The error is probably in the T2130:

- Check the connection between the TX-processor (3) and the Connection Board (6) in T2130.

71. VFORWARD LOW

The level of the Vforward voltage is low (< 0.7 Volt) measured at the output of the SWR detector on the
Output Filter (2).
SP-22-0 displays the latest measured Vforward.
The RF-signal is probably

72. VFORWARD HIGH

The level of the Vforward voltage is high.
SP 22-0 displays the latest measured Vforward.
Check the output level of the Exciter Unit (4) in the RE2100.
The error may also occur if the T2130 has been improperly calibrated.

73. HIGH SWR IN THE TUNING OF THE AT2110

It is not possible to tune the AT2110 to an SWR better than 2.5.

- Check the aerial.

- Check the RF-signal path from the Power Amplifier (1) in the T2130 to the aerial.

- Check the SWR detector on the Output Filter (2). Please refer to section 3.4.2. in the instruction manual
for T2130.

74. TRANSMITTER TEMPERATURE HIGH

Ensure a free air flow at the bottom and at the top of the T2130 chassis.
SP 21-0 displays the state of the temperature protection function. Please refer to the Service Pro­grammes.

- Check the idle current in the Power Amplifier (1). Please refer to section 3.4.1. in the instruction manual
for T2130.

- Check the temperature measuring circuit. Please refer to section 3.5.3.1. A/D CONVERTER in the
instruction manual for T2130.

75. HIGH SWR WHEN TRANSMITTING

This error may occur if the aerial has become bad since the latest uptune on the frequency or has become
bad during a transmit period.
SP-23-0 displays the latest measured SWR.

76. BATTERY VOLTAGE LOW

The Power Amplifier (1) has been blocked due to low battery voltage.
During the period of the automatic power setting or when the transmitter has been keyed, the battery
voltage has been measured to be lower than approx. 18 Volt.

- Check the battery, specially the charging state.

- Check the cable installation from the battery to the Connection Board (6) in the T2130.

PAGE 3-3

3 SERVICE T2130
If the error has appeared because of an error in the measuring circuit, please refer to section 3.5.3.1. A/

D CONVERTER, +24 Volt Sense Measuring, in the instruction manual for T2130.

77. TEMPERATURE SENSOR ERROR

The temperature is measured to be very high or very low, indicating an error in the temperature measuring
circuit. Please refer to section 3.5.3.1. A/D CONVERTER, Temperature Measuring in the instruction
manual for T2130.

78. INTERNAL SWR TOO HIGH

The SWR in the internal dummy load used for the automatic power setting is higher than certain limits.
For frequencies lower than 20 MHz the SWR is 1.2.
For frequencies above 20 MHz the SWR limit is 1.6.
Please refer to the circuit description for the Output Filter (2) section 3.4.2. in the instruction manual for
T2130.

PAGE 3-4

3 SERVICE T2130

3.4.1 POWER AMPLIFIER (MODULE 1)

Connect a 50 ohm load to RF in/out (ST04) on the Connection Board (6).

3.4.1.1 ERROR 71. VFORWARD LOW

This means that there is no output from the PA-module.
Select service programme SP-29, see section 3.9.1.

3.4.1.2

Check the RF-input level on the PA-module (1).
Approx. 1.2 Vpp.

3.4.1.3

Check the RF-output level on the PA-module (1).
Approx. 200 Vpp.

3.4.1.4

Check of bias. Note only when the output is zero. See chapter 3.6. ADJUSTMENT PROCEDURE,
sections 3.6.1.1 to 3.6.1.4.

3.4.1.5

If the measurement above is ok, then the fault is probably to be found in the Output Filter (2).

3.4.1.6 ERROR 74. TRANSMITTER TEMPERATURE HIGH

The temperature on the output transistors is too high.

3.4.1.7

Check that there are free air circulation around the transmitter and the ambient temperature is not more
than 40°C. If the temperature is higher the performance will be reduced.

3.4.1.8

Check R45 (temperature sensor) located on one of the screws holding Q10 (see component location for
Power Amplifier (1) in chapter 5.1). When it is 25°C the resistance is 2.00 Kohm.

3.4.1.9

Check if the output transistors have a good thermal contact to the heatsink.

IMPORTANT! Always use thermal compound for the power transistors. (e.g. Wakefield part No.
120-8 or equivalent).

PAGE 3-5

3 SERVICE T2130

3.4.2 OUTPUT FILTER (MODULE 2)

3.4.2.1 ERROR 71. VFORWARD LOW

3.4.2.2

Check if the error comes up on all frequencies (one in each filter). Fault is probably in relay RE14-2 or
in the cabling from module 2 to the Connection Board (6).
If the error only comes up in one filter, check the input/output relays (eg. RE01-2, RE07-2), and then the
filter capacitors.

3.4.2.3

Check of the Vforward detector.
Select service programme SP-29, see chapter 3.9.

3.4.2.4

Measure the RF-output voltage on the Connection Board (6) with an oscilloscope approx. 200 Vp-p.
Then check the DC voltage on U01/1 pin 1 approx. 6.5V.

3.4.2.5 ERROR 78. INTERNAL SWR TOO HIGH

3.4.2.6

Check R27 and R28 (the power resistors to the left of module 6) with an ohmmeter value 50 ohm ±10%.

3.4.2.7

Check relay RE14.

3.4.2.8 ERROR 73 AND 75

Connect a 50 ohm load to the output terminal on the Connection Board (6).
Select service mode SP-29, see chapter 3.9.

3.4.2.9

Check Vforward U1 pin 1 approx. 6.5 V

Vreverse U1 pin 7 approx. 10.5 mV.

3.4.2.10

IF Vforward and Vreverse are ok. Then the fault is in TX-Processor (3)

PAGE 3-6

3 SERVICE T2130

3.4.3 TX-PROCESSOR (MODULE 3)

Check all incoming and outgoing voltages.
A. Supply voltages. Measured with voltmeter.

Incoming: Pin Plug Meas. ref.

--------------------------------------------------------------------------------

GND 1,2,3 6
+5 Volt A 6 6 GND
+5 Volt B 7 6 GND

-5 Volt 5 6 GND

+15 Volt 10 6 GND

-15 Volt 9 6 GND

+18 Volt 11 6 GND
OVA 9 5 Battery minus
+21 Volt 1 5 OVA

Outgoing: Pin Plug Meas. ref

--------------------------------------------------------------------------------

GND 10,11,12 4
+15 Volt 9 4 GND

B. Signal voltages.
Incoming Pin Plug Please see section

-----------------------------------------------------------------------------------------------------------------

Vforward 7 4 3.5.3.1. A/D CONVERTER
Vreverse 8 4 3.5.3.1. A/D CONVERTER
AE-current 3 5 3.5.3.5. AE-CURRENT, Vf.cond.
180o pulse 3 5 3.4. ERROR MESSAGES (70)
Man. Tune 10 5 3.5.3.10.MANUAL TUNE
+24V sense 4 6 3.5.3.1. A/D CONVERTER
Temperature 13,14 6 3.5.3.1. A/D CONVERTER

Outgoing: Pin Plug Please see section

-----------------------------------------------------------------------------------------------------------------

Control 1-6 1-6 4 3.5.3.2. OUTPUT FILTER DRIVER
RX/TX 13 4 3.5.3.2. OUTPUT FILTER DRIVER
RX-TX/drive 14 4 3.5.3.2. OUTPUT FILTER DRIVER
TLX on/off 2 5 3.5.3.4. TELEX OPEN
Mute 4 5 3.5.3.2. OUTPUT FILTER DRIVER
Clock 5 5 3.5.3.6. AT2110 DRIVER
Data 6 5 3.5.3.6. AT2110 DRIVER
Vf/AE-current 8 5 3.5.3.3. AE-CURRENT, Vf.Cond.
RF on/off 8 6 3.5.3.3. RF ON/OFF

PAGE 3-7

3 SERVICE T2130

3.4.4 POWER SUPPLY (MODULE 4)

3.4.4.1

If all output supplies are missing, check the main fuses F02 and F03 (20A) located on the Connection
Board (6).

3.4.4.2

If only the +18V, -18V, +9V are missing the fault is in the switch mode power supply.

3.4.4.3

Check the voltage on U01 pin 13, 12V (heatsink as common).

3.4.4.4

If zero voltage, check fuse F01 (3.15A) on the Connection Board (6).

3.4.4.5

If it is ok, disconnect the gate and source on switching Fet’s on Q02 and Q03.

3.4.4.6

Then check the waveforms on U01 pin 11 and 12, see below.

3.4.4.7

If not ok, then the fault is in U01.

3.4.4.8

If ok, then reconnect the gate and source and check the waveforms on U01 pin 11/12, see below.

PAGE 3-8

3 SERVICE T2130

3.4.4.9

If the waveforms look like that, the drain/source current is too high, Check for a defect rectifier diode or
a defect regulator (U02 to U06).

3.4.4.10

If the waveforms look like under point 3.4.4.6, then Q2 or Q3 is defect, It might also be a fault in the feed­back circuit (D23, OC01)

PAGE 3-9

3 SERVICE T2130

3.4.5 NOT USED

3.4.6 CONNECTION BOARD (MODULE 6)

No hints.

3.4.7 REPLACEMENT OF COMPONENTS

When replacing transistors, diodes, resistors, capacitors and similar components you must use a small
„pencil“ soldering iron of 30 to 75 Watt rating. The soldering must be performed rapidly to avoid over­heating, and the use of a tin sucker is recommended, as otherwise there is a risk that both the components
and the printed circuit will be spoiled.

After replacement of components look-up the chapter 3.7.2 COMPONENTS REPLACED.

3.4.8 REPLACEMENT OF MODULES

If a fault has been found in a module, it may often be worthwhile to replace it and then repair it later on.
After replacement of a module look-up the chapter 3.7.1 MODULES REPLACED.

PAGE 3-10

3 SERVICE T2130

3.5 PERFORMANCE CHECK

All tests are done with an RE2100 connected, and a supply voltage of exactly 24.00V.
In the subsections in this section is referred to the following test set-

up modes:
Mode 1: Standby. Receive mode, with aerial connected.
Mode 2: 50 ohm dummy load connected to the output of T2130. Jumper 5 is inserted into

plug PO2-5 in the TX-processor (3) in the T2130.

Mode 3: 50 ohm dummy load connected to the output of the AT2110.

PAGE 3-11

3 SERVICE T2130

3.5.1 POWER AMPLIFIER (MODULE 1)

Presettings. Note 2.

3.5.1.1 BIAS CURRENT

Select service programme SP-33, see section 3.9.1.

3.5.1.2

Connect an ammeter (F.S. 100 mA) in series with P1, and check that the current is 80 mA
±30 mA.

3.5.1.3

Select normal receive mode. Check that the current is zero.

3.5.1.4

Connect an ammeter (F.S. 1A) in series with P2, and check that the current is 450 mA
±100 mA.

3.5.1.5

Select normal receive mode. Check that the current is zero.

3.5.1.6 POWER GAIN.

Select service programme SP-29, see section 3.9.1.

3.5.1.7

Connect an oscilloscope with 1:10 probe (0.2V/div) across J01. Adjust the level to 1 Vpp by means of
the buttons ‘up’ and ‘down’.

3.5.1.8

Connect the oscilloscope with 1:10 probe (20V/div) to J02. Check that the level is 170 Vpp ±50V.

3.5.1.9 CHECK OF FULL POWER OUTPUT

Select normal transmit mode, frequency approx. 1.6 MHz. Connect the handset to RE2100.

3.5.1.10

Connect an oscilloscope with 1:10 probe (50V/div) to J02.

3.5.1.11

Key the transmitter and whistle into the microtelephone- Check that the level is more than
245 Vpp.

3.5.1.12

Select a transmitter frequency near to 25 MHz.

3.5.1.13

Key the transmitter and whistle into the microtelephone. Check that the level is more than
228 Vpp.

PAGE 3-12

9724

3 SERVICE T2130

3.5.2 OUTPUT FILTER (MODULE 2)

Presettings. Note 2.

3.5.2.1 SWR-DETECTOR

Select service programme SP-29, see section 3.9.1.

3.5.2.2

Adjust the output to 200 Vpp across the external 50 ohm load by means of the buttons ‘up’ and ‘down’.

3.5.2.3

Check that the voltage on pin 7, U01 is less than 400 mV.

3.5.2.4

Check that the voltage on pin 1, U01 is 6.3V ±0.5V.

3.5.2.5 FILTER SECTION

Select service programme SP-11, see section 3.9, and note the last digit. Then press 1 <ENT>. The
display will now show ‘SP-11-1’.

Select service programme SP-12 and note the last digit. Then press 3 <ENT>. The display will now show
‘SP-12-3’.

Press <TUNE> and select H3E mode.

3.5.2.6

Check the output power for each filter in the low and high end in accordance with the table below. Key
the transmitter by means of the handset key.

Low High Max.
Frequency Frequency Power Difference
kHz kHz dB

1605 2599 1
2600 4199 1
4200 6799 1
6800 11099 1
11100 18099 1.4
18100 29999 1.7

3.5.2.7

When the test is finished do the following.
Select service programme SP-11. Then key-in the noted digit and press <ENT>.

Select SP-12 and key-in the noted digit and press <ENT>. Then press <TUNE>.

PAGE 3-13

3 SERVICE T2130

3.5.3 TX-PROCESSOR (MODULE 3)

3.5.3.1 A/D CONVERTER

REFERENCE VOLTAGE

Test set-up: Mode 1.
A. Connect a Voltmeter to pin 13 on U15, (4053).

Voltage is +2.5 Volt +/- 1.5%.

B. Connect a Voltmeter to pin 7 on U16/2, (TL072).

Voltage is +5.0 Volt +/- 1.7%.

VFORWARD MEASURING

Test set-up: Mode 2.
A. Select a frequency near 1650 kHz.

Connect a voltmeter to the upper end of R56, (3K92). Key the microphone and whistle into the
microphone. Note the voltmeter reading (approx. 10V) Release the key while whistling.

B. Enter SP-22-0.

Compare the displayed Vforward to the measured voltage. Maximum deviation from the measured
voltage is +/-4%.

SWR MEASURING

Test set-up: Mode 2.
A. Enter SP-29.

Connect a Voltmeter to the upper end of R56, (3K92). Vforward voltage should be approx. 7.3 Volt
DC.

B: Connect a Voltmeter to the upper end of R65, (3K92). Vreverse voltage should be

approx. 0.12 Volt DC. Leave SP-29 by entering the ‘ENT’ key.

C: Calculate the SWR.

Vforward + Vreverse

SWR = ----------------------------

Vforward - Vreverse

D. Enter SP-23-0 >ENT<.

Compare the displayed SWR to the calculated voltage. Maximum deviation from the calculated is
+12%/-5%.

+24 VOLT SENSE MEASURING

Test set-up: Mode 2.
A. Connect a Voltmeter to the upper end of R63, (15K4).

B: Enter SP-29. Read the voltmeter. Leave SP-29 by entering ‘ENT’. Calculate the battery voltage:

‘+24 Volt Sense’ + 0.95

Vbattery = ----------------------------------

1.31

Enter SP-20-0 >ENT<.

C: Compare the displayed battery voltage to the calculated voltage. Maximum deviation

from the calculated is +/-5%.

PAGE 3-14

3 SERVICE T2130
NOTE: This is just checking the measuring circuit - NOT the absolute battery voltage present at the

Connection Board (6).
The special sequence of SP-29 followed by SP-20-0 may give a different battery voltage
compared to a normal read of SP-20-0 caused by an offset added by the calibration of the
T2130.

TEMPERATURE MEASURING

Test set-up: Mode 1.
A: Disconnect the PO1 on the Power Supply (4). This is the cable to the temperature sensor R45 on the

Power Amplifier (1).
Connect a resistor of 2 Kohm on the PO1 on the Power Supply (4).

B: Connect a Voltmeter to the lower end of R60, (8K2). Voltage is 2.5 Volt +/-1.7% +/- tolerances on the

2 Kohm resistor.

C: Calculate an adctemp:

Measured voltage * 255

adctemp = ----------------------------------

5.0 Volt

D: Enter SP-21-1 >ENT<.

Multiply the displayed result by 10. Compare to the calculated acdtemp. Maximum deviation is +/- 2%.

E: Reconnect temperature sensor to P.S. module P01

3.5.3.2 OUTPUT FILTER MODULE DRIVERS

RX/TX RELAY DRIVER

Test set-up: Mode 1.
A: Enter SP-29. Connect the voltmeter to U09 pin 16. Voltage is <1.1 Volt. Leave SP-29 by entering ‘ENT’.

TX/DRIVE RELAY DRIVER

Test set-up: Mode 1.
A: Enter SP-29. Connect the voltmeter to U08 pin 16. Voltage is < 1.1 Volt. Leave SP-29 by entering

‘ENT’.

OUTPUT FILTER RELAY DRIVERS

Test set-up: Mode 2.
Each of the six drivers controls two relays for switching in the lowpass filters.
A: Key in a TX-frequency in the frequency range for the specific filter.

FREQUENCY RANGE PIN ON U08

-------------------------------------------------------

1.6 - 2.599 MHz 14

2.6 - 4.199 MHz 12

4.2 - 6.799 MHz 10

6.8 - 11.099 MHz 11

11.1 - 18.099 MHz 13

18.1 - 30.000 MHz 15

B: Connect the voltmeter to the specific pin on U08.
C: Key the transmitter. Voltage is < 1.1 Volt.

PAGE 3-15

3 SERVICE T2130

3.5.3.3 RF ON/OFF

Test set-up: Mode 1
A: Connect a voltmeter to the collector of Q11 or at P06 pin 8.

B: Key the transmitter. Voltage is < 0.8 Volt.

3.5.3.4 TELEX OPEN

Test set-up: Mode 1
A: Connect pin 6 ST03 on the Connection Board (6) to ST02 pin 16 SP-BUS INTERRUPT, and connect

pin 5 ST03 to ST02 pin 4 +18V.
B: Connect a voltmeter to the collector of Q10.
C: Select „TLX“ mode on the RE2100 and key the transmitter.

Check that Q10 is on (low).
D: Select „J3E“ mode on the RE2100.

Check that Q10 is off (high).

3.5.3.3 AE-CURRENT/VFORWARD CONDITIONING

AE-CURRENT

Test set-up: Mode 1. Turn „RF“ fully clockwise.
A: Connect a voltmeter to ST02 pin 2 on the Connection Board (6).
B Disconnect the wire at pin 3 at ST01 on the Connection Board (6) and connect a variable power supply

to pin 3 at ST01 with a 1 Kohm in series (negative terminal to chassis).
C: Vary the power supply and check the voltmeter according to the table below:

Vin (ST01, pin 3): Vout (ST02, pin 2):

0.0V 0.87V ±10%

5.0V 4.27V ±10%

10.0V 7.77V ±10%

15.0V 8.00V ±10%

18.5V 9.80V ±10%

VFORWARD

Test set-up: Mode 1.
A: Insert jumper 5 in the TX-processor.
B: Switch off/on the RE2100.
C: Connect a voltmeter to U06 pin 7 or at ST02 pin 2 on the Connection Board (6).
D: Key the transmitter and modulate. Read the voltmeter. Voltage follows the modulation.
E: Remove the jumper.

3.5.3.6 AT2110 DRIVER

CLOCK DRIVER

Test set-up: Mode 2.
A: Connect an oscilloscope (0.5 msec/div, 5 Volt/div) to ST01, pin 5 on the Connection

Board (6), ground to ST01, pin 10.

Voltage is low, < approx. 1 Volt.
B: Set the RE2100 to scan two frequencies, one below 3900 kHz, and the other above

4100 kHz.

24 clock pulses appear. The high level is approx. +21 Volt.

PAGE 3-16

0129

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 trigger+ (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.

PAGE 3-17

3 SERVICE T2130

3.5.3.9 TUNE MOTOR CONTROL

HIGH SPEED

Test set-up: Mode 1.
A: Connect a voltmeter (positive) at pin 7 at ST01, negative at pin 10 at ST01 on the Connection Board

(6).

B: Switch off and on the RE2100.

The tune motor is then being reset at high speed. The motor runs approx. 1.5 sec. Voltage is approx.
16 Volt.

LOW SPEED

Test set-up: Mode 1.
A: Enter SP-32-3 >ENT<.

Connect a voltmeter to pin 7 motor + and to pin 10, 0 VA.
Check that the voltage is approx. 8 Volt.

3.5.3.10 MANUAL TUNE

Test set-up: Mode 1.
A: Connect a voltmeter at pin 23 on U02 (HD63BO3Y).
B: Toggle the ‘Manual Tune’ switch on the Connection Board (6). High level voltage = approx. 5 Volt.
Low level voltage < 0.5 Volt.

3.5.3.11 MICROPROCESSOR

RESET

Test set-up: Mode 1.
A: Check the +5 Volt B supply at pin 1 and 2 on U03 (MAX690). Voltage = 5 Volt +/- 0.25 Volt.
B: Check the value at pin 6 on U02 (HD63B03Y). Voltage is above the +5 Volt B minus 0.5 Volt.

BATTERY LOW DETECTOR

Test set-up: Mode 1.
A: Check the +18 Volt supply at the upper end of R01 (22K1). Voltage >17.3 Volt.
B: Check the ‘Power fail output’ at pin 5 on U03 (MAX690). Voltage >4.5 Volt.

WATCH DOG

Test set-up: Mode 1.
A: Connect an oscilloscope to the ‘watch dog input’ at pin 6 on U03 (MAX690). (0.2 sec/div and 2 Volt/

div). Check that the level is shifted for every 0.8 sec. If it is not, then the microprocessor does not
execute the programme properly.

PAGE 3-18

3 SERVICE T2130

3.5.4 POWER SUPPLY (MODULE 4)

3.5.4.1

Check of supply voltages to RE2100.
Check the voltages on the Connection Board (6) in accordance with the table below.

Pin No. Name Lower Upper
ST2 limit limit
3 +9V 8V 10V
4 +18V 18V 20V
14 -18V -18V -20V
16 GND

3.5.4.2

Check of supply voltages to TX-Processor (3).
All voltages are with GND as reference. Note the heatsink is connected to -battery (0VA) and is not
grounded.

U02, Vout = +5V ±5%
U03, Vout = +5V ±5%
U04, Vout = +15V ±5%
U05, Vout = -15V ±5%
U06, Vout = -5V ±5%

3.5.4.3

Check of supply voltage to the AT2110 aerial coupler.
The voltage is measured on the Connection Board (6).
ST1 pin 1 to pin 10 22V ±2V.

3.5.4.4

Check of supply voltage to PA-amplifier (1) with input (battery) voltage = 24.0V.
Check that the collector supply to the output transistors at PO2 on module 1 is 23.7V ±0.2V. (Heatsink
as negative reference).

3.5.4.5

Key the transmitter and whistle in the microphone. The collector voltage must not drop more than max.

0.5V.

3.5.4.6

With input (battery) voltage 30V, check that the collector supply to the output transistors at PO2 on module
1 is 27.25V ±0.75V.

3.5.4.7

Check of audio amplifier U07.
Connect an 8 ohm load to loudspeaker output on the Connection Board (6) ST3 No. 15 and 16.
Connect an audio generator 1700 Hz, 300 mVpp to ST2 No. 7 and 8 (AF to AMP common, AF to AMP).

3.5.4.8

Check with an oscilloscope that the output accross the 8 ohm is undistorted and has a peak to peak value
of 17V ±3V.

PAGE 3-19

3 SERVICE T2130

3.5.5 NOT USED

3.5.6 CONNECTION BOARD (MODULE 6)

3.5.6.1 MUTE RX OUT

Key the transmitter with the microtelephone key.

3.5.6.2

Check by means of an ohmmeter that there is contact from ST03 pin 1 to 2.

3.5.6.3 MUTE RX IN

Connect a power supply +15V from pin 11 to pin 12 on ST03.

3.5.6.4

Check that the receiver is muted.

3.5.6.5 TX-KEY AND RF ON/OFF

Only if supplied with telex.

3.5.6.6

Select TLX mode on RE2100.

3.5.6.7 TX-KEY

Connect pin 3 on ST03 to GND and pin 4 to +18V on ST02 pin 4.

3.5.6.8

Check that the relays on the Output Filter (2) are activated.

3.5.6.9 RF ON/OFF

Connect also pin 5 on ST03 to GND and pin 6 to +18V on ST02 pin 4.
Connect an audio generator (1700 Hz, 760 mV) to pin 9 and pin 10 on ST03.

3.5.6.10

Check that the transmitter is now transmitting with full power

PAGE 3-20

3 SERVICE T2130

3.6 ADJUSTMENT PROCEDURE

3.6.1 POWER AMPLIFIER (MODULE 1)

3.6.1.1 ADJUSTMENT OF ZERO SIGNAL CURRENT

Presettings:
a. Turn R14 and R30 fully counter clockwise.
b. Disconnect P3 (driver supply) and P2 (output transistor supply).
c. Select service programme SP-33, see chapter 3.9.1.

3.6.1.2 ADJUSTMENT OF DRIVER ZERO SIGNAL CURRENT

Connect an ammeter (F.S. 100 mA) in series with J01 and P01. Adjust R14 to a meter reading of 80 mA.

3.6.1.3 ADJUSTMENT OF THE OUTPUT TRANSISTOR ZERO SIGNAL CURRENT

Connect an ammeter (F.S. 1A) in series with J02 and P02. Adjust R30 to a meter reading of 450 mA.

NOTE! the current will be drifting the first minute or so.

3.6.1.4

After adjustment of zero signal currents connect the plugs P3 and P2.

3.6.2 ADJUSTMENT OF OUTPUT FILTER (MODULE 2)

3.6.2.1 INITIAL SETTINGS:

Select service programme SP-25, see chapter 3.9.1.

3.6.2.1 ADJUSTMENT OF SWR DETECTOR

Adjust C31 to minimum voltage on U01 pin 7 (must be less than 0.7V).
NOTE! the transmitter is only transmitting for 2 secs, then it is off for 2 secs and so on. You can only adjust
C31 when the transmitter is transmitting.

3.6.3 ADJUSTMENT OF DRIVE LEVEL

3.6.3.1 INITIAL SETTINGS:

a. Connect an oscilloscope with 1: 10 probe (50V/div) across R27 module 2.
b. Select service programme SP-25, see chapter 3.9.1.
c. Adjust input voltage to 24.00V.

3.6.3.2

By means of the buttons

just occurs on the oscilloscope.

9315

FREQ FREQ

adjust the signal, so that flat topping

PAGE 3-21

3 SERVICE T2130
IMPORTANT! the input voltage (battery supply) must be 24.00V for calibration.

Then press

to store the drive level setting. See also chapter 3.9.1.

1

PAGE 3-22

9315

3 SERVICE T2130

3.7 NECESSARY ADJUSTMENTS AFTER REPAIR

3.7.1 MODULES REPLACED

3.7.1.1 POWER AMPLIFIER (MODULE 1)

Adjust the Power Amplifier (1) as described in section 3.6.1.
Perform a calibration of T2130. Please refer to chapter 3.9. SERVICE PROGRAMMES, SP-25.

3.7.1.2 OUTPUT FILTER (MODULE 2)

Adjust the Output Filter (2) as described in section 3.6.2.

3.7.1.3 TX-PROCESSOR (MODULE 3)

New module delivered direct from S. P. Radio A/S:
Calibrate the T2130. Please refer to section 3.9. SERVICE PROGRAMMES, SP-25.

An exchanged module:

1. Check the EEPROM’s by entering SP-24-0.

2. Initialize the EEPROM’s by entering SP-24-2.

3. Calibrate the T2130. Please refer to chapter 3.9. SERVICE PROGRAMMES,

SP-25.

3.7.1.4 POWER SUPPLY (MODULE 4)

No adjustments.

3.7.1.6 CONNECTION BOARD (MODULE 6)

No adjustments.

PAGE 3-23

3 SERVICE T2130

3.7.2 COMPONENTS REPLACED

3.7.2.1 POWER AMPLIFIER (MODULE 1)

After replacing the components, perform adjustment procedure section 3.6.1 POWER AMPLIFIER and

3.6.3 ADJUSTMENT OF DRIVE LEVEL.

3.7.2.2 OUTPUT FILTER (MODULE 2)

After replacing the components in the filter section, no adjustment is necessary.
After replacing components in the directional coupler, perform adjustment procedure section 3.6.2
ADJUSTMENT OF OUTPUT FILTER (MODULE 2) and 3.6.3 ADJUSTMENT OF DRIVE LEVEL.

3.7.2.3 TX-PROCESSOR (MODULE 3)

U11 or U12:

1. Test the replaced EEPROM’s for read and write.
Please refer to chapter 3.9 SERVICE PROGRAMMES, SP-24-0.

2. Initialize EEPROM’s from scratch.
Please refer to chapter 3.9 SERVICE PROGRAMMES, SP-24-1.

3. Calibrate the T2130.
Please refer to chapter 3.9 SERVICE PROGRAMMES, SP-25.

U17:

1. Calibrate the T2130. Please refer to chapter 3.9 SERVICE PROGRAMMES, SP-25.

3.7.2.4 POWER SUPPLY (MODULE 4)

No adjustment necessary.

3.7.2.6 CONNECTION BOARD (MODULE 6)

No adjustment necessary.

PAGE 3-24

3 SERVICE T2130

3.8 FUNCTION CHECK

The function check is divided into two sections, one for the transmitter installed and one for the transmitter
at your workshop.

3.8.1 FUNCTION CHECK FOR THE TRANSMITTER INSTALLED

3.8.2

Select the lowest transmitting frequency and press <TX> <TUNE>. When the tune lamp extinguishes,
press the handset key and whistle into the microphone. While whisteling release the handset key.

3.8.3 BATTERY CHECK

Press <1> and <0> simultaneously. The display will now show ‘SP-’.
Then key <200> <ENT>.
The TX display will now show what the battery voltage was when transmitting (must be more than 22V).

3.8.4 OUTPUT POWER CHECK

Key <222> <ENT>.
The TX display shows the latest measured Vforward (must be more than 9V).

3.8.5 SWR CHECK

Key <230> <ENT>.
The TX display shows the SWR (must be better than 2).

3.8.6 CHECK OF POWER GAIN IN PA-MODULE (1)

Key <261> <ENT>.
The TX display shows the drive setting (must be more than 12).

3.8.7 END OF SERVICE PROGRAMME

Key <TUNE>.

3.8.8

Check that it is possible to tune and to transmit in all marine bands.

3.8.9

Make a control call to a coast station.

3.8.10 FUNCTION CHECK AT WORKSHOP

Connect a 50 ohm load in series with a Bird in line power meter and a power supply 28V, 20A.

3.8.11

Perform function check 3.8.2 to 3.8.7.

PAGE 3-25

3 SERVICE T2130

3.8.12 OUTPUT POWER CHECK

Make a power check in each marine band.
Check, by whisteling into the microphone, if the power is within the limits given below.

Low limit High limit

1.6 - 3.8 158 W 270 W
4 MHz band 158 W 270 W
6 MHz band 158 W 270 W
8 MHz band 158 W 270 W
12 MHz band 158 W 270 W
16 MHz band 158 W 270 W
18 MHz band 158 W 270 W
22 MHz band 158 W 270 W
25 MHz band 130 W 270 W

3.8.13 MODULATION CHECK

Connect an oscilloscope accross the load, modulate the transmitter with speech.

3.8.14

Check that the signal looks allright.

PAGE 3-26

3 SERVICE T2130

3.9 SERVICE PROGRAMMES

In the following it is assumed that the Service Programme jumper is inserted in the RE2100.
In general, if the RE2100 displays ‘Err.0’ in a Service Programme, the selected SP does not exist.

Example:
Operator: Key: 20-7 <ENT>

RE2100: Displays: ‘SP-20-7’

‘ Err.0’

Legend: Err.0 = The entered service programme does not exist.

3.9.1 SERVICE PROGRAMMES IN T2130

SP-20-0

Displays the latest measured Vbattery voltage.
Example:
Operator: Key: 20-0 <ENT>

RE2100: Displays: ‘SP-20-0’

‘ 25.3’

Legend: Measured in Volt

SP-20-1

Measures and displays the present Vbattery voltage.
Example:
Operator: Key: 20-1 <ENT>

RE2100: Displays: ‘SP-20-1’

‘ 26.2’

Legend: Measured in Volt.

SP-21-0

Displays the state of the temperature protection.
Example:

Operator: Key: 21-0 <ENT>
RE2100: Displays: ‘SP-21-0’

‘ 00.1’

Legend: 00.0 There has been no reduction of Vforward due to high temperature.

00.1 There has been a reduction of Vforward due to high temperature.

00.2 The Power Amplifier has been blocked due to very high temperature.

9315

PAGE 3-27

3 SERVICE T2130

SP-22-0

Displays the latest measured Vforward voltage.
The voltage is only valid after the transmitter has been keyed.
Example:

Operator: Key: 22-0 <ENT>
RE2100: Displays: ‘SP-22-0’

‘ 10.7’

Legend: Measured in Volt

SP-22-1

Measures and displays the present Vforward.
Example:

Operator: Key: 22-1 <ENT>
RE2100: Displays: ‘SP-22-0’

‘ 10.9’

Legend: Measured in Volt.

SP-22-2

Displays the latest measured Vforward maximum voltage.
The voltage is only valid after the transmitter has been keyed.
Example:

Operator: Key: 22-2 <ENT>
RE2100: Displays: ‘SP-22-0’

‘ 11.2’

Legend: Measured in Volt.

SP-23-0

Displays the latest measured SWR.
Example:

Operator: Key: 23-0 <ENT>
RE2100: Displays: ‘SP-23-0’

‘ 1.6’

SP-23-2

Displays the measured SWR when the tuning has finished.
Example:

Operator: Key: 23-2 <ENT>
RE2100: Displays: ‘SP-23-0’

‘ 1.7’

PAGE 3-28

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3 SERVICE T2130

SP-24-0

Tests the EEPROM’s for write and read.
Example:

Operator: Key: 24-0 <ENT>
RE2100: Displays: ‘SP-24-0’

---

--­RE2100: Displays: ‘SP-24-0’

‘ A. ‘

Legend: A. = No errors found

Err.1 = Error found in U11
Err.2 = Error found in U12.

NOTE! the duration of the test is approx. 8 seconds.

SP-24-1

Deletes all stored Retune Data from the EEPROM’s.
Example:

Operator: Key: 24-1 <ENT>
RE2100: Displays: ‘SP-24-1’

---

--­RE2100: Displays: ‘SP-24-1’

A.

Legend: A. = Deleting finished

SP-24-2

Initializes EEPROM’s from scratch. Stores standard data in the EEPROM.
Example:

Operator: Key: 24-2 <ENT>
RE2100. Displays: ‘SP-24-2’

---

--­RE2100: Displays: ‘SP-24-1’

A.

Legend: A. = Initializing finished.

NOTE! The T2130 must be turned off and on after the execution of this Service Programme. The T2130
MUST be calibrated after this Service Programme.

SP-25

Calibrates the T2130.
Example:

Operator: Connect an oscilloscope to the internal Dummy Load in the T2130.
Operator: Connect a Voltmeter to the battery supply pins at the Connection Board (6) in the bottom of

the T2130.

9315

PAGE 3-29

3 SERVICE T2130
Operator: Key: 25

RE2100: Displays: ‘SP-25-’

‘ CAL.’

RE2100: Delivers a two-tone RF-signal continuously (same as tune tones).

TX-frequency: 1600.0 kHz.

T2130: Opens and closes for the two-tone RF-signal. Open for 2 seconds and

closed for 2 seconds.
Operator: Ensure continuously that the battery voltage is 24.0 Volt in the open period.
Operator: Adjust the RF-level of the two-tones by using the keys <FREQ UP>

and <FREQ DOWN> until the RF-signal on the oscilloscope is just not distorted.
Operator: Key: 1 <ENT>

RE2100: Displays: ‘SP-25-1’

‘ A.’

Legend: A. = Accepted. T2130 is calibrated.

Err. 1 = Battery voltage is high. Please check.

Err. 2 = Battery voltage is low. Please check.

Err. 3 = Forward Voltage is high. See the description of Error Message 72.

Err. 4 = Forward Voltage low. See the description of Error Message 71.

Err. 5 = Bad SWR in the internal dummy load.

Note! If any ‘Err.’ comes up the T2130 is NOT calibrated.

UNINTENTIONAL CALL OF SP-25

If the operator unintentionally has keyed ‘25’ it is possible to leave Service Programme 25 without
calibrating the T2130 in the following way:

Operator: Key: <ENT> or <TUNE>
SP-25 may also be left by switching off the power on the RE2100.

SP-26-0

Displays the maximum step of the Step Attenuator in the RE2100 Exciter.
Example:

Operator: Key: 26-0 <ENT>
RE2100: Displays: ‘SP-26-0’

‘ 14.’

SP-26-1

Displays the actual step of the Step Attenuator in the RE2100 Exciter.
Example:
Operator: Key: 26-1 <ENT>
RE2100: Displays: ‘SP-26-1’

‘ 18.’

PAGE 3-30

9315

3 SERVICE T2130

SP-27

Displays the version and the release of the software in the TX-processor (3) in the T2130.

Example:

Operator: Key: 27-0 <ENT>

RE2100: Displays: ‘SP-27-0’

‘ 1083.A’

Legend: ‘1083’ is S. P. Radio’s identification of the version of the software.

On the label of the
EEPROM is written: C1083A.

‘ ‘ = 1. release
‘A’ = 2. release
‘B’ = 3. release
etc.

SP-28

Sets RF-power level (reduced power).

Power levels: 0 = Normal, 250 W

1 = 150 W
2 = 125 W
3 = 100 W

Example:

Operator: Key: 28-(0-3)<ENT>

‘SP-28-(0-3)’

---

RE2100: Displays: ‘SP-28-2’

‘ 125. ‘

Legend: 125. = Set to 125 W.

SP-29

Trouble shooting service programme.

Example:

Operator: Key: 29

RE2100: Displays: ‘SP-29-0’

‘ SE. ‘

RE2100: Delivers a two-tone RF-signal continuously (same as tune tones).

TX-frequency: 1600.0 kHz.

T2130: The corresponding lowpass filter is switched in and the transmitter is keyed.

It is advisable to connect a 50 ohm dummy load instead of the aerial coupler.

Operator: May now trouble shoot the transmitter without being disturbed by error messages etc.

Adjustment of the RF-level of the two-tones is done by using the keys <FREQ UP>
and <FREQ DOWN>. When the trouble shooting is finished:

Operator: Key: <ENT>

RE2100: Displays: ‘SP-29-0’

‘ A.’

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PAGE 3-31

3 SERVICE T2130

SP-33

Adjustment of the bias current in the power transistors in the Power Amplifier (1).
Example:
Operator: Key: 33
RE2100: Displays: ‘SP-33-0’

‘ SE. ‘

T2130: The transmitter is keyed.

There are no RF-signals applied to the Power Amplifier (1).
Operator: May now adjust the bias current in accordance with the adjustment procedure.

When the adjustment is finished:
Operator: Key: <ENT>

RE2100: Displays: ‘SP-33-0’

‘ A. ‘

3.9.2 SERVICE PROGRAMMES RELATED TO AT2110

SP-30

Activates AT2110 relays 1-9 one by one, and releases any relay.
Example:

Operator: Key: 30 - (0-9) <ENT>
RE2100: Displays: ‘SP-30-(0-9)’

‘ A. ‘

Legend: 0 = No relays activated.

1-9 = Relays 1-9 activated.

A. = Accepted.
The T2130 activates the entered AT2110 relay no., other relays are released.

SP-31

Activates AT2110 relays 10-19 one by one.
Example:

Operator: Key: 31 - (0-9) <ENT>
RE2100: Displays: ‘SP-31-(0-9)’

‘ A. ‘

Legend: 0-9 = Relays 10-19 activated.

A. = Accepted.
The T2130 activates the entered AT2110 relay no., other relays are released.
If the AT2110 is in the systen (jumper 5 is inserted in the TX-processor) the following is displayed:
RE2100: Displays: ‘SP-25 ‘

‘ Err.1 ‘

SP-32-0

Resets the AT2110 ‘Clock’ line, ‘Data’ line and the ‘Motor +’ line to their normal state.
Example:

Operator: Key: 32 - 0 <ENT>
RE2100: Displays: ‘SP-32-0’

‘ A. ‘

PAGE 3-32

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3 SERVICE T2130

SP-32-1

Sets the AT2110 clock line high.

Example:

Operator: Key: 32 - 1 <ENT>

RE2100: Displays: ‘SP-32-1’

‘ A. ‘

SP-32-2

Sets the AT2110 data line high.

Example:

Operator: Key: 32-2 <ENT>

RE2100: Displays: ‘SP-32-2’

‘ A. ‘

SP-32-3

Sets supply on the AT2110 ‘Motor +’ line, (low speed).

Example:

Operator: Key: 32 - 3 <ENT>

RE2100: Displays: ‘SP-32-3’

‘ A. ‘

--

9315

PAGE 3-33

CONTENTS

4 MECHANICAL DISASSEMBLING

4.1 MECHANICAL DISASSEMBLING AND MODULE LOCATION 4-1

T2130

9724

4 MECHANICAL DISASSEMBLING

T2130

4-0-25892

4-0-25893

After disconnecting all cables on the connection board, remove the inner chassis by dismounting the 2

screws marked *

PAGE 4-1

4 MECHANICAL DISASSEMBLING

4.1 MECHANICAL DISASSEMBLING AND MODULE LOCATION

T2130

Output-Filter (Module 2)

Remove Remove

Remove

Connection Board (Module 6)

TX-Processor (Module 3

)

Remove

FOTO NO. 50995, 50997, 501009, 501010, 501012, 501041, 501042, 501043, 501045,

Remove Remove

Small Cover

Turnable
Chassis

Remove

Turnable
Chassis

Remove

PAGE 4-2

4 MECHANICAL DISASSEMBLING T2130

Mounting Plate

Connection Cables

Mounting Plate

Connection Board (Module 6)

Power Amplifier

(Module 1)

Connection Board

(Module 6)

Turnable

Chassis

Heat Zink

Remove screw to
disassemble Turnable Chassis

Power Supply

(Module 4)

Power Amplifier (Module 1)

Remove screw to
disassemble Turnable Chassis

Power Supply (Module 4)

Mounting Plate

Connection Board (Module 6)

J1

P1

Connection Board (Module 6)

J3

P2 P3

J2

PAGE 4-3

T2130

CONTENTS

5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS

5.1 POWER AMPLIFIER (MODULE 1) PART NO. 625641 5-1

5.2 OUTPUT FILTER (MODULE 2) PART NO. 625642 5- 2

5.3 TX-PROCESSOR (MODULE 3) PART NO. 625643 5-5

5.4 POWER SUPPLY I (MODULE 4) PART NO. 625644 5-7

5.6 COMPONENT LOCATION CONNECTION BOARD MODULE 6 5-28

5.9 INTERCONNECTION CABLE PLAN 5-31

9724

T2130

5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS

5.1 POWER AMPLIFIER (MODULE 1) PART NO. 625641

The power amplifier has a gain of 50 dB ±3 dB.

The power input is approx. 0 dBm and the output is approx. 250W.

The power amplifier has three stages each working as a class B push-pull amplifier.

The pre-amplifier consists of two 2N3553 (Q03, Q04) transistors working in push-pull. The bias supply

for the pre-driver consists of Q01, D01 and R01, R02. R01, R02 divide the 15V down to 9.6V and Q01

is a current amplifier.

Q02 is used to switch off the bias and D01 produces the basis-emitter diode of Q01 from reverse break-

down when Q02 is in saturation.

The signal from the pre-driver is fed through the impedance matching transformer TR02 to the driver. The

two driver transistors MRF426 (Q06, Q07) are working as push-pull class B. There is a current feed-back

from TR03 through R26 to the basis of Q06, Q07. C10, R21, and C11, R22 form an input impedance

matching network.

The bias supply is built around U01/1 OP.Amp.

D02 is a temperature compensating diode and is thermal connected to Q06. When Q06 gets hotter the

voltage drop over D02 gets lower and thus the output of U01/1 and Q08 is lowered (Q08 is a current

amplifier for U01/1). The result is that the current through Q06, Q07 is stabilized or lowered.

The bias current through Q06, Q07 is adjusted by means of the potentiometer R14.

Q05 is used to switch off the bias of Q06, Q07.

The output from Q06, Q07 is fed through the impedance matching transformer TR04 to the output stage

which consists of two TH416 (Q09, Q10) transistors working in class B.

Current feed-back is taken from TR05 through R38, R39 to the basis of Q09, Q10.

C17, R31, R32, R33, and C18, R34, R35, R56 form an input impedance matching network for Q09, Q10.

The biasing network is built around U01/2 and is in principle equal to the circuit for the driver. D03 is

thermal connected to Q10 and the bias is adjusted by means of the potentiometer R30.

Q11 is used to switch off the bias to Q09, Q10.

TR06 is transforming the low collector impedance of Q09, Q10 up to 50 ohm.

The power output is approx. 250W PEP.

A temperature sensor R45 sensors the temperature of one of the output transistors. The sensor is

connected to the TX processor which takes care of reducing the power when the transistors get too hot.

PAGE 5-1

5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS T2130

COMPONENT LOCATION POWER AMPLIFIER MODULE 1

Seen from component side with upper side tracks Seen from component side with lower side tracks

PCB rev. 25641I

PAGE 5-2

9802

5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS T2130

T2130

POWER AMPLIFIER MODULE 1

X=500uSec/DIV

0V0V

Y=500mV/DIVY=200mV/DIV
X=500uSec/DIV
REF: -BATT.

0V

Y=2V/DIV
X=500uSec/DIV
REF: -BATT.

0V

Y=5V/DIV
X=500uSec/DIV
REF: -BATT.

0V

Y=20V/DIV
X=500uSec/DIV

This diagram is valid for PCB rev. 25641I

9802

PAGE 5-3

5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS T2130

PAGE 5-4