tp1-pro tuning pulser & ssb cal. standard › wp-content › uploads › 2016 › 05 ›...

TP1-PRO TUNING PULSER & SSB CAL. STANDARD

High power amplifiers are generally rated at their maximum power for SSB voice operation using PEP specifications. For example, one amplifier may be rated at 800 watt PEP (Peak envelope power) and 500 watt for continuous power (CW). Another amplifier might be rated at 1KW watts PEP and 500 watts for continuous power (CW). These two amplifiers have identical CW power specifications. However, the latter amplifier lists higher PEP power. How is that possible? The answer is the amplifier power supply and the nature of the human voice. Some amplifiers rely on capacitor banks in the high voltage power supply to provide the energy for the brief PEP during speech. To check the max PEP power, some hams actually utter words such as “X-ray” to mimic human speech. The problem is that there is not a repeatable way to do this. This is where the TP1 SSB standard comes in.

The typical duty factor of SSB voice operation is much lower (5-15%) than that of CW operation. This depends on the voice. No two voices are alike. However, an average voice has certain characteristics with frequency spectrum and duty factor. The TP1 provides a modulation envelope consisting of a 2.5 KHz burst with an adjustable duty cycle between 10ms to 25ms and rep rate of 20-50 Hz. The calibrated setting for a Crest factor of C-20dB is 10ms and 25 Hz. This setting is repeatable and can be used as a standard when evaluating amplifier performance. The waveform shown is the recommended tuning waveform.

Another well established recommendation is to tune power amplifiers at their maximum power level. However, when tuning at that level, the duty factor has to be very low or damage to the amplifier can occur. The TP1 allows for precise duty factor and rep rate control. The duty factor can be adjusted from 2.5% up to about 20%. For a 1000W PEP amplifier, the maximum dissipation will be less then 25W. ON/OFF selects between Pulse and Aux (two tone generator etc.).

FRONT PANEL CONTROLSAUX/IN provides input for an auxiliary signal (two tone generator etc.)PULSE OUT independent pulse output. 2.5KHz BURST 10MS - 25 MSREP RATE 20HZ - 50 HzLEVEL -30dBu min -3dBu max

SPECIFICATIONS:Burst Frequency: 2.5KHz +/- 200 HzBurst Duration: 10ms to 25 ms +/- 2 msRep Rate: 20Hz to 50Hz +/- 5 HzPulse Output Z: 600 ohmsPower Source: Microphone line or external 9-12 VDCPulse ON Pressing PTT enables pulse output Pulse OFF microphone normal operation.Aux In: suitable for Two Tone test generator such as Precise RF model TTG .

AMPLIFIER TUNING

1. Connect the TP1 between the microphone and the receiver microphone input. If needed, a universal 8 pin interface cable set is available as an option.

APPNOTE-USER MANUAL TP1-PRO TUNING PULSER & SSB STANDARD®

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2. Set the internal DIP switch to match your receiver type. (See the setting chart)

3. Key the microphone. This transmits the tuning pulses only. Tune and or measure your amplifier’s PEP output power. This will take a fast responding PEP watt meter. Note that the PEP to average power rating will be remarkable in as much as the PEP power will be close to maximum, yet the average power will be quite a bit lower.

4. Set the ON/OFF switch to OFF. This returns the microphone to normal operations.

5. Set the ON/OFF switch to OFF. This returns the microphone to normal operations. be close to maximum, yet the average power will be quite a bit lower.


AMPLIFIER PERFORMANCE EVALUATION 1. Connect the TP1 between the microphone and the

receiver microphone input. (Refer to the previous illustrations) If needed, a universal 8 pin interface cable set is available as an option.

2. Set the internal DIP switch to match your receiver type. (See the setting chart below.)

3. Set the TP1 burst and rep rate to the calibrated C-20dB setting 10mS and 25Hz marked on the panel.

4. Adjust the TP1 output level (-30 to -3 dBu) to the desired output level.

5. Adjust the 2.5KHz burst duration and repetition rate based on your requirements. The calibrated C-20dB setting is 10mS and 25Hz marked on the panel.

6. Key the microphone. This transmits the tuning pulses only. Tune and or measure your amplifier’s PEP output power. This will take a fast responding PEP watt meter. Note that the PEP to average power rating will be remarkable in as much as the PEP power will be close to maximum, yet the average power will be quite a bit lower.

7. You now have a consistent SSB modulation source. You will be able to make amplifier comparisons.


CIRCUIT DESCRIPTIONU1 is a LM555 configured as a pulse generator

with an adjustable repetition rate of 20Hz to 50Hz and pulse width of 10 to 25 ms. U2 is a LM555 configured as a 2.5 KHz burst generator which is gated by U1. Q1 and Q2 and their associated circuits are the gated burst integration and shaping circuits. The output level is nominal 600 ohms. S1 selects the tuning burst output or an auxiliary input such as a two tone generator. SW1 and SW2 are nine (9) position DIP switches which allow configuration of the microphone connector pin-out of the most common radios. For those radios not listed, refer to the schematic and program your switch accordingly. The input and output are universal RJ45 connectors. Optional adaptor cables are available to convert these to an 8 pin DIN connector. Since the signal produced is a complex waveform simulating human speech, a trigger-out pin is provided on the rear panel to allow easy triggering with an oscilloscope. When connected to a microphone input connector which provides power, the DP1-PRO uses it as a power source. An external power input allows the use of common 9VDC center pin positive wall warts (not included).

TEST PROCEDUREExcept for the front panel controls, there are no

internal adjustments. If you are familiar with electronic circuits and have access to test equipment such as a multi-meter and an oscilloscope, you can verify and repair the TP1-PRO yourself. Refer to the circuit description above. TP1 is the TTL level of U1 pulse generator output. TP2 is the 2.5 KHz gated burst output.

Manufacture’s Suggested Retail Price (MSRP). Prices and specifications subject to change without notice.

(c) 2016 all right reserved.V1.16 5/31/16 R. Stenbock W1RMS

Precision Ham Radio Measurements


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STEP-BY-STEP ASSEMBLY INSTRUCTIONCheck your kit to make sure that all of the components are present using the Bill of Materials below.Some care is needed as this kit uses 1/8 watt resistors. The two ICs are board mounted. If you are an inexperienced kit builder, install 8 pin IC sockets (not furnished).

TP1 Pro Main Board Bill of Materials REV C TP1 Pro Main Board Bill of Materials REV C TP1 Pro Main Board Bill of Materials REV CQTY Product/Value Reference Designators Digikey Part Number

1 TAP-1 Rev C PCB PCB PresiceRF1 0.01uF (103) C8 399-4150-ND1 0.022uF (223) C7 399-4169-ND4 0.1uF (104) C1, C2, C5, C9 399-4151-ND1 2.2uF C3 P15835CT-ND2 4.7uF C4, C6 1189-2183-ND2 1N914 D1, D2 1N914BCT-ND1 Green LED D3 160-1142-ND2 3.5mm Connector J2, J5 16PJ135 MOUSER1 5 Pin Header J1 SAM1067-05-ND2 2N3904 Q1, Q2 2N3904FS-ND2 1K (Brn, Blk, Red) R13, R15 CF18JT1K00CT-ND1 4.7K (Yel, Vio, Red) R2 CF18JT4K70CT-ND4 10K (Brn, Blk, Org) R10, R11, R12, R14 CF18JT10K0CT-ND3 10K Pot R3, R4, R16 987-1310-ND1 22K (Red, Red, Org) R6 CF18JT22K0CT-ND2 47 (Yel, Vio, Blk) R,7 R9 CF18JT47R0CT-ND1 100 (Brn, Blk, Brn) R18 CF18JT100RCT-ND1 390 (Orn, Wht, Brn) R8 CF18JT390RCT-ND2 470 (Yel, Vio, Brn) R1, R5 CF18JT470RCT-ND2 620 (Blu, Red, Brn) R17, R19 CF18JT620RCT-ND1 DPST Switch S1 563-1162-ND2 LM555 U1, U2 LM555CNFS-ND2 Test Points TP1, TP2 609-3466-ND

TP1 Pro IO Board Bill of Materials Rev CTP1 Pro IO Board Bill of Materials Rev CTP1 Pro IO Board Bill of Materials Rev C1 TAP-1 IO PCB Rev C PCB PreciseRF2 4.7uF C1, C3 1189-2183-ND1 0.1uF (104) C2 399-4151-ND1 1K R1 CF18JT1K00CT-ND2 RJ-45 Connector J1-J2 AE10387-ND1 2.1mm Barrel Conn. J3 CP-047A-ND1 5 Pin Header J4 A113138-ND2 #4-40 x .75" Standoff J5-J6 36-2029-ND 4 #4-40x.25" Screw J5-J6 H342-ND2 9 Position Dip Switch S1, S2 CT2069RAST-ND1 Test Point TP1 609-3466-ND1 Shunt J4JP 3M9580-ND

CHASSIS (Option)1 Chassis TAP-1 Chassis PreciseRF3 Knob Multicom MC201601 Front Panel TAP-1 FP PreciseRF


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COMPONENT REFERENCES

Anode

Cathode


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TP1 PRO MAIN BOARD ASSEMBLY

Locate the TP Pro Main PCB, Rev C. place parts into the board but do not solder until instructed to. Refer to the figure below during installation.

1. ( ) Install a 1K Ohm resistor (Brn, Blk, Red) at locations R13 and R15.

2. ( ) Install a 4.7K Ohm resistor (Yel, Vio, Red) at location R2.

3. ( ) Install a 470 Ohm resistor ( Yel, Vio, Brn) at locations R1, and R5.

4. ( ) Install a 22K Ohm resistor (Red, Red, Red) at location R6.

5. ( ) Install a 47 Ohm resistor ( Yel, Vio, Brn) at locations R7 and R9.

6. ( ) Install a 390 Ohm resistor (Org, Wht, Brn) at location R8.

7. ( ) Install a 10K Ohm resistor (Brn, Blk, Org) at locations R10, R11, R12, and R14.

8. ( ) Install a 100 Ohm resistor (Brn, Blk, Brn) at location R18

9. ( ) Install a 620 Ohm resistor (Blu, Red, Brn) at locations R17 and R19.

10. ( ) Install 1N914 diodes at D1 and D2. Note Diode polarity’s

11. ( ) Solder and trim all resistor diode and leads.12. ( ) Install LM555s at U1 and U2 and solder

13. ( ) Install 2N3904 at Q1 and Q2 and solder

14. ( ) Install a 0.1uF cap (104) at locations C1, C2, C5 and C9.

15. ( ) Install a 0.022uF cap (222) at location C7.16. ( ) Install a 0.01uF cap (103) at location C8.

17. ( ) Install a 2.2uF cap at location C3. Note capacitor polarity.

18. ( ) Install a 4.7uF cap at locations C4 and C6. Note capacitor polarity.

19. ( ) Solder and trim all capacitor leads.

20. ( ) Install J2 and J5 as shown. See the figure and solder.

21. ( ) Install the Test point at locations J3 and J4 and solder.

22. ( ) Install Switch S1 and solder.

23. ( ) Install 10 K pots R3, R4 and R16 as shown. See the figure and solder.

24. ( ) Install J1 on the back side of the board and solder.

25. ( ) Install the LED at location D3. See the figure and solder.

TP1 PRO IO BOARD ASSEMBLY

Locate the TAP1 IO PCB

26. ( ) Install a 1K Ohm resistor (Brn, Blk, Red) at location R1

27. ( ) Install a 4.7uF cap at location C1 and C3. Note polarities.

28. ( ) Install a 0.1uF (104) cap at location C2.

29. ( ) Solder and trim all resistors and capacitors leads.

30. ( ) install a RJ-45 connector at locations J1 and J2 and solder.

31. ( ) Install a 2.1mm Barrel Connector at location J3 and solder.

32. ( ) Install a 9 Position Dip Switch at locations S1 and S2 and solder.

33. ( ) Install a 5 pin header at location J6 and solder.

34. ( ) Install a 2 pin header at location J4 and solder.

35. ( ) Install a test point TP1 at location J7 and solder.

36. ( ) Install a #4-40 x .75” standoff at locations J5 and J8 using #4-40x.25” screws.


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TRIGGERSCOPETO TAP-1 BOARD

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MIC IN

MIC OUT+

4+

3

2

TO RADIOFROM MICROPHONE

1

HGFEDCBA

+VCC

TAPIOREV_CNumber: CRev.:

preciseRF

Root.schFile:Project:

Title: TAP-1 IO Board

TAP-1 1/1Page:

Jan 7, 2016Date:

GND

Standoff_2

J8

11J7

1

J6

54321

1KR1Standoff_1

J5

11

GNDGNDGND

4.7uFC3

2 1 GND.1uF

C2

21

4.7uF

C1

21

GND

J4

2 1

CUI_DCIN

J3

1

3

2

S2

18

17

15

16

13

14

10

11

12

9875 64321

S1

18

17

15

16

13

14

10

11

12

9875 64321

GNDGND

J2

10gnd

9gnd

88

77

66

55

44

33

22

11

12

11

J1

10gnd

9gnd

88

77

66

55

44

33

22

11

12

11

6

LEVELOUTPUT

1

CCWCW5

+

4

+

CCW3

PULSE+RATECW

TALKREP

1

2

GNDVCC

CWCCWMic_Out

Mic_InCYCLEDUTY

1

HGFEDCBA

111Number: CRev.:

PreciseRF

Root.schFile:Project:

Title: TAP1

1/1Page:

1/7/2016Date:

GND

620R17

GNDGND0.1uFC9

21

GNDGND

0.01uF

C8

21

10KR16

2

3 1

1K

R15

Standoff_2

J7

10KR14

1KR13

GND

2N3904

Q2

31

210K

R12

Standoff_1

J60.022uFC7

21

4.7uFC6

21

GND

GND10K

R112N3904

Q1

31

210KR10

47

R9

390

R8GND

620R190.1uF

C5

21 VCC

LM555

U2

7DSCHG

6THR

2TRG

5CV

8VCC

4RST

3OUT

47R7

22K

R6

PULSE_OUT

J5

3

2

14.7uFC4

21VCCTP2

J4

1

VCC

2.2uFC3

21 0.1uF

C2

21

10KR4

2

31

100

R18GND

VCCTP1

J3

1

470R5

GNDLED

D3

21

_S1

5

6

4

3

2

1

10KR3

2

31

Aux_Audio

J2

3

2

1

HEADER_5

J1

5

4

3

2

1

GND

4.7K

R20.1uFC1

21

LM555

U1

7DSCHG

6THR

2TRG

5CV

8VCC

4RST

3OUT

1N914

D1

21

1N914D2

21

470

R1

VCC


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tp1-pro tuning pulser & ssb cal. standard › wp-content › uploads › 2016 › 05 ›...

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