APPNOTE-USER MANUAL TP1-PRO TUNING PULSER & SSB STANDARD TP1-PRO TUNING PULSER & SSB CAL. STANDARD

Transcription

1 APPNOTE-USER MANUAL TP-PRO TUNING PULSER & SSB STANDARD TP-PRO TUNING PULSER & SSB AL. 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 00 watt PEP (Peak envelope power) and 00 watt for continuous power (W). Another amplifier might be rated at KW watts PEP and 00 watts for continuous power (W). These two amplifiers have identical W 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 Xray to mimic human speech. The problem is that there is not a repeatable way to do this. This is where the TP SSB standard comes in. The typical duty factor of SSB voice operation is much lower (-%) than that of W 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 TP provides a modulation envelope consisting of a. KHz burst with an adjustable duty cycle between 0ms to ms and rep rate of 0-0 Hz. The calibrated setting for a rest factor of -0dB is 0ms and 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 TP allows for precise duty factor and rep rate control. The duty factor can be adjusted from.% up to about 0%. For a 000W PEP amplifier, the maximum dissipation will be less then W. ON/ OFF selects between Pulse and Aux (two tone generator etc.). FRONT PANEL ONTROLS AUX/IN provides input for an auxiliary signal (two tone generator etc.) PULSE OUT independent pulse output..khz BURST 0MS - MS REP RATE 0HZ - 0 Hz LEVEL -0dBu min -dbu max SPEIFIATIONS: Burst Frequency:.KHz /- 00 Hz Burst Duration: 0ms to ms /- ms Rep Rate: 0Hz to 0Hz /- Hz Pulse Output Z: 00 ohms Power Source: Microphone line or external - VD Pulse 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. onnect the TP between the microphone and the receiver microphone input. If needed, a universal pin interface cable set is available as an option.

2 APPNOTE-USER MANUAL TP-PRO TUNING PULSER & SSB STANDARD. You now have a consistent SSB modulation source. You will be able to make amplifier comparisons.. Set the ON/OFF switch to OFF. This returns the microphone to normal operations.. Set the internal DIP switch to match your receiver type. (See the setting chart). 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.. Set the ON/OFF switch to OFF. This returns the microphone to normal operations.. 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.. Set the ON/OFF switch to OFF. This returns the microphone to normal operations. AMPLIFIER PERFORMANE EVALUATION. onnect the TP between the microphone and the receiver microphone input. (Refer to the previous illustrations) If needed, a universal pin interface cable set is available as an option.. Set the internal DIP switch to match your receiver type. (See the setting chart below.). Set the TP burst and rep rate to the calibrated -0dB setting 0mS and Hz marked on the panel.. Adjust the TP output level (-0 to - dbu) to the desired output level.. Adjust the.khz burst duration and repetition rate based on your requirements. The calibrated -0dB setting is 0mS and Hz marked on the panel.. 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. IRUIT DESRIPTION U is a LM configured as a pulse generator with an adjustable repetition rate of 0Hz to 0Hz and pulse width of 0 to ms. U is a LM configured as a. KHz burst generator which is gated by U. Q and Q and their associated circuits are the gated burst integration and shaping circuits. The output level is nominal 00 ohms. S selects the tuning burst output or an auxiliary input such as a two tone generator. SW and SW are nine () 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 RJ connectors. Optional adaptor cables are available to convert these to an 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 DP-PRO uses it as a power source. An external power input allows the use of common VD center pin positive wall warts (not included). TEST PROEDURE Except 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 TP-PRO yourself. Refer to the circuit description above. TP is the TTL level of U pulse generator output. TP is the. KHz gated burst output. Precision Ham Radio Measurements Manufacture s Suggested Retail Price (MSRP). Prices and specifications subject to change without notice. (c) 0 all right reserved. V. // R. Stenbock WRMS

3 APPNOTE-USER MANUAL TP-PRO TUNING PULSER & SSB STANDARD STEP-BY-STEP ASSEMBLY INSTRUTION heck 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 / watt resistors. The two Is are board mounted. If you are an inexperienced kit builder, install pin I sockets (not furnished). TP Pro Main Board Bill of Materials REV QTY Product/Value Reference Designators Digikey Part Number TAP- Rev PB PB PresiceRF 0.0uF (0) -0-ND 0.0uF () --ND 0.uF (0),,, --ND.uF PT-ND.uF, --ND N D, D NBT-ND Green LED D 0--ND.mm onnector J, J PJ MOUSER Pin Header J SAM0-0-ND N0 Q, Q N0FS-ND K (Brn, Blk, Red) R, R FJTK00T-ND.K (Yel, Vio, Red) R FJTK0T-ND 0K (Brn, Blk, Org) R0, R, R, R FJT0K0T-ND 0K Pot R, R, R -0-ND K (Red, Red, Org) R FJTK0T-ND (Yel, Vio, Blk) R, R FJTR0T-ND 00 (Brn, Blk, Brn) R FJT00RT-ND 0 (Orn, Wht, Brn) R FJT0RT-ND 0 (Yel, Vio, Brn) R, R FJT0RT-ND 0 (Blu, Red, Brn) R, R FJT0RT-ND DPST Switch S --ND LM U, U LMNFS-ND Test Points TP, TP 0--ND TP Pro IO Board Bill of Materials Rev TAP- IO PB Rev PB PreciseRF.uF, --ND 0.uF (0) --ND K R FJTK00T-ND RJ- onnector J-J AE0-ND.mm Barrel onn. J P-0A-ND Pin Header J A-ND #-0 x." Standoff J-J -0-ND #-0x." Screw J-J H-ND Position Dip Switch S, S T0RAST-ND Test Point TP 0--ND Shunt JJP M0-ND HASSIS (Option) hassis TAP- hassis PreciseRF Knob Multicom M00 Front Panel TAP- FP PreciseRF

4 APPNOTE-USER MANUAL TP-PRO TUNING PULSER & SSB STANDARD OMPONENT REFERENES Anode athode

5 APPNOTE-USER MANUAL TP-PRO TUNING PULSER & SSB STANDARD TP PRO MAIN BOARD ASSEMBLY Locate the TP Pro Main PB, Rev. place parts into the board but do not solder until instructed to. Refer to the figure below during installation.. ( ) Install a K Ohm resistor (Brn, Blk, Red) at locations R and R.. ( ) Install a.k Ohm resistor (Yel, Vio, Red) at location R.. ( ) Install a 0 Ohm resistor ( Yel, Vio, Brn) at locations R, and R.. ( ) Install a K Ohm resistor (Red, Red, Red) at location R.. ( ) Install a Ohm resistor ( Yel, Vio, Brn) at locations R and R.. ( ) Install a 0 Ohm resistor (Org, Wht, Brn) at location R.. ( ) Install a 0K Ohm resistor (Brn, Blk, Org) at locations R0, R, R, and R.. ( ) Install a 00 Ohm resistor (Brn, Blk, Brn) at location R. ( ) Install a 0 Ohm resistor (Blu, Red, Brn) at locations R and R. 0. ( ) Install N diodes at D and D. Note Diode polarity s. ( ) Solder and trim all resistor diode and leads.. ( ) Install LMs at U and U and solder. ( ) Install N0 at Q and Q and solder. ( ) Install a 0.uF cap (0) at locations,, and.. ( ) Install a 0.0uF cap () at location.. ( ) Install a 0.0uF cap (0) at location.. ( ) Install a.uf cap at location. Note capacitor polarity.. ( ) Install a.uf cap at locations and. Note capacitor polarity.. ( ) Solder and trim all capacitor leads. 0. ( ) Install J and J as shown. See the figure and solder.. ( ) Install the Test point at locations J and J and solder.. ( ) Install Switch S and solder.. ( ) Install 0 K pots R, R and R as shown. See the figure and solder.. ( ) Install J on the back side of the board and solder.. ( ) Install the LED at location D. See the figure and solder. TP PRO IO BOARD ASSEMBLY Locate the TAP IO PB. ( ) Install a K Ohm resistor (Brn, Blk, Red) at location R. ( ) Install a.uf cap at location and. Note polarities.. ( ) Install a 0.uF (0) cap at location.. ( ) Solder and trim all resistors and capacitors leads. 0. ( ) install a RJ- connector at locations J and J and solder.. ( ) Install a.mm Barrel onnector at location J and solder.. ( ) Install a Position Dip Switch at locations S and S and solder.. ( ) Install a pin header at location J and solder.. ( ) Install a pin header at location J and solder.. ( ) Install a test point TP at location J and solder.. ( ) Install a #-0 x. standoff at locations J and J using #-0x. screws.

6 TRIGGER SOPE TO TAP- BOARD MI IN MI OUT TO RADIO FROM MIROPHONE H G F E D B A TAPIOREV_ Number: Rev.: preciserf File: Root.sch Project: Title: TAP- IO Board TAP- / Page: Date: Jan, 0 Standoff_ J J J K R Standoff_ J.uF.uF.uF J UI_DIN J S 0 S 0 J 0 J 0 LEVEL OUTPUT W W W PULSE RATE W TALK REP W W Mic_Out Mic_In YLE DUTY H G F E D B A Number: Rev.: PreciseRF File: Root.sch Project: Title: TAP Page: / Date: //0 0 R 0.uF 0.0uF 0K R K R Standoff_ J 0K R K R N0 Q 0K R Standoff_ J 0.0uF.uF 0K R N0 Q 0K R0 R 0 R 0 R 0.uF LM U DSHG THR TRG V RST OUT R K R PULSE_OUT J.uF TP J.uF 0.uF 0K R 00 R TP J 0 R LED D _ S 0K R Aux_Audio J HEADER_ J.K R 0.uF LM U DSHG THR TRG V RST OUT N D N D 0 R APPNOTE-USER MANUAL TP-PRO TUNING PULSER & SSB STANDARD