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Miteq D-9301, Руководство по эксплуатации и обслуживанию, Страница: 43 / 86

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4-9

4.3.1.4  Downconverter Module (A2A8)

Part Number:  DM675-1100-70-XXXXX
Description:  Downconverter Module
Function:  Provide a well matched system output, frequency 

  translation, gain and gain control.

Design:  Integrated assembly

Specifications -

A.  Frequency -

   1.  Input:

1100 ±20 MHz

   2.  Output:

50-90 MHz

   3.  LO:

1170 MHz at +10 dBm

B.  Gain:

16 dB nominal
31 dB nominal (Option 16A)
41 dB nominal (Option 16C)

C.  Output VSWR:

26 dB/75 ohms
(50 ohms with Option 15)

D.  Input VSWR:

 

23 dB/50 ohms

E.  Power Output

(1 dB Compression):

+10 dBm minimum

F.  DC Voltage:

+20 volts

G.  Gain Control:

6 dB minimum
(30 dB with Option 3C)

H.  IF Monitor Output

 (Option 2B):

-20 dBc nominal

I.  Local Oscillator

Monitor Output:

-20 dBc nominal

J.  Connectors -

   1.  Input:

SMA female

   2.  Output:

BNC female

   3.  LO:

SMA female

   4.  DC:

Solder filter

Содержание D-9301

Страница 1: ...Ref XXXXX OPERATION AND MAINTENANCE MANUAL FOR D 9301 DOWNCONVERTER AUGUST 2004 CUSTOMER MAXXXXXD 114087F Rev B ...

Страница 2: ...e number assigned at time of order This number should be referred to in all correspondence and all referrals to spare parts The reference number is XXXXX The D 9301 9300 Series Downconverter MITEQ reference XXXXX has been supplied with the following options A AC Power XXX VAC ...

Страница 3: ... 1 1 2 FUNCTIONAL 1 5 1 2 EQUIPMENT CHARACTERISTICS 1 6 1 2 1 PHYSICAL 1 6 1 2 2 FUNCTIONAL 1 7 1 3 EQUIPMENT REQUIRED 1 10 1 3 1 EQUIPMENT SUPPLIED 1 10 1 3 2 EQUIPMENT REQUIRED BUT NOT SUPPLIED 1 10 SECTION 2 INSTALLATION 2 1 UNPACKING STORAGE RESHIPMENT 2 1 2 2 MOUNTING 2 1 2 3 TURN ON PROCEDURE 2 1 ...

Страница 4: ...er 3 6 3 3 2 2 1 Header Byte 3 6 3 3 2 2 2 Device Address Byte 3 6 3 3 2 2 3 Command Error Codes 3 6 3 3 2 2 4 Parameter Bytes 3 7 3 3 2 2 5 Trailer Byte 3 7 3 3 2 2 6 Checksum Byte 3 7 3 3 2 3 Command Codes 3 7 3 3 2 3 1 Frequency Code F 3 7 3 3 2 3 2 Mute Code M 3 7 3 3 2 3 3 Status All Code A 3 8 3 3 2 3 4 Status Faults Code Optional 3 8 3 3 2 4 Device Address Baud Rate Selection 3 9 3 3 2 5 Pr...

Страница 5: ... 9 2 1 Frequency Set 3 11 3 3 2 9 2 2 Mute 3 12 3 3 2 9 2 3 Set Store Frequency in Channel nn 3 12 3 3 2 9 2 4 Recall Frequency from Channel nn 3 12 3 3 2 9 2 5 Data Format 3 12 3 3 2 9 2 6 Frequency Format 3 12 3 3 2 9 2 7 Status Faults Format 3 13 3 3 2 9 2 8 Status All Format 3 13 3 3 2 9 2 9 Channel Format 3 13 3 3 2 9 2 10 Service Request 3 14 3 3 3 EMERGENCY OPERATION 3 14 3 3 4 SHUTDOWN PRO...

Страница 6: ...9 4 3 2 LOCAL OSCILLATOR 4 10 4 3 2 1 5 MHz Reference A3A1 4 10 4 3 2 2 Frequency Synthesizer A3A2 4 11 4 3 2 3 1170 MHz Phase Locked Source A3A6 4 12 4 3 3 CONVERTER CONTROLLER 4 14 4 3 4 POWER SUPPLY LOW PASS FILTER 4 15 SECTION 5 MAINTENANCE 5 1 INTRODUCTION 5 1 5 2 PREVENTIVE MAINTENANCE 5 1 5 2 1 DC VOLTAGE 5 1 5 2 2 GAIN OF THE CONVERTER 5 3 5 2 3 FREQUENCY MEASUREMENT 5 3 5 2 4 LOCAL OSCILL...

Страница 7: ...nconverter 1 3 1 3 Interior View D 9301 Downconverter 1 4 3 1 Front Panel Layout 9300 Series Converter 3 2 3 2 RS422 RS485 Bus Termination Jumpers 9300 Series Converter 3 15 4 1 Block Diagram D 9301 Downconverter 4 2 4 2 Block Diagram 1170 MHz Phase Lock Source A3A6 4 13 5 1 Test Setup for Gain Gain Ripple and Frequency Response Measurement 5 2 DIAGRAMS 6 1 Wiring Diagram 6 2 6 2 Schematic Diagram...

Страница 8: ...equipment rack The following items are found on the front of the converter A On Off Power Switch A1A2 B LO Out of Lock LEDs C Memory Store Key D Memory Recall Key E Display F Gain Adjustment Potentiometer G Data Entry Keypad H Remote Mode Select Key The following items are found on the rear of the converter A RF Input Connector J1 B IF Output Connector J2 C Summary Alarm Connector J3 D Remote Inte...

Страница 9: ...y Local Oscillator Out of Lock Alarms Data Entry Keypad Memory Store Memory Recall Gain Adjust Potentiometer Remote Mode Select A1A2 AC Power On Off Switch 1 2 3805 Figure 1 1 Front View D 9301 Downconverter ...

Страница 10: ...se A1A5 Fan J3 Summary Alarm Address Select Local Oscillator Test Points DC Voltage Test Points Ground Lug J7 Redundant Switching J6 Remote Interface J2 IF Output J1 RF Input 1 3 Figure 1 2 Rear View D 9301 Downconverter 3805 ...

Страница 11: ... 3805 1 4 Figure 1 3 Interior View D 9301 Downconverter A1A1 A1A3 A1A4 A1A2 A4A1B A3A2 A2A6 A2A7 A3A3 A2A5 A3A4 A3A5 A2A4 A2A3 A2A2 A2A1 A2A8 A3A6 A3A7 A3A1 A1A5 ...

Страница 12: ...n given optimum consideration to provide the user with a transparent frequency conversion for all video and data applications RF frequency may be selected from the front panel in 125 kHz increments Non volatile memory allows the operator to store up to thirty channel frequencies Remote operation is available via the RS485 serial interface The status of the converter s functions and alarms may also...

Страница 13: ...9 x 22 x 3 5 panel height C Signal Input Connector J1 N female D Signal Output Connector J2 BNC female E Summary Alarm Connector J3 DE 9P F Remote Interface Connector J6 1 RS485 RS422 DE 9S 2 RS232 DB 25P 3 Contact Closure DB 25S 4 IEEE 488 IEEE 488 receptacle G Redundancy Switch Connector J7 DE 9P ...

Страница 14: ...4 dB 5 Gain Adjustment 6 dB nominal no options 30 dB minimum Option 3C B Group Delay 18 MHz 1 Standard a Linear 0 03 ns MHz b Parabolic 0 01 ns MHz c Ripple 1 ns peak to peak 2 Option 5A 1 ns peak to peak total group delay C VSWR 1 Input 20 dB return loss 50 ohms 2 Output 26 dB return loss 75 ohms 50 ohms optional D Third Order Intermodulation For two inband signals at an output level of 10 dBm in...

Страница 15: ... 7 4 2 GHz in 125 kHz increments 1 Channel Memories 30 non volatile I Primary Power Selectable at the rear panel 100 120 220 230 240VAC J Rear Panel Test Points 1 RF LO Phase Voltage Variable with frequency 2 IF LO Phase Voltage 10 2V 3 RF LO Frequency Power Test Point 15 dBm minimum 4800 5300 MHz 4 IF LO Frequency Power Test Point 15 dBm minimum 1170 MHz 5 DC Voltage Test Points 20 0 5V 5 2 0 1V ...

Страница 16: ... Lock and LO Level Normal Option 8 Only b Alarm 4 5 closed 5 6 open DC Power Fault or Local Oscillator s Out of Lock or LO Level Low Option 8 Only L Redundancy Switch Connector J7 Pin Designations 1 Normal 1 2 open 2 3 closed DC Power Normal and Local Oscillators In Lock and LO Level Normal Option 8 Only 2 Alarm 1 2 closed 2 3 open DC Power Fault or Local Oscillator s Out of Lock or LO Level Low O...

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Страница 18: ... packing material should be used on all sides of the converter The carton should be marked to indicate that it contains fragile electronic equipment 2 2 MOUNTING The converter chassis is 19 x 22 x 3 5 panel height Slides are provided for mounting in a standard 19 EIA equipment rack The converter should be securely mounted 2 3 TURN ON PROCEDURE After mounting make all external connections per Table...

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Страница 20: ...nput is indicated on the installed card To change the voltage input pull the card out and replace it with the desired voltage facing out The card can be used to set the AC input voltage to 100 120 220 or 230 240 VAC D Gain Control The front panel potentiometer provides 6 dB minimum of gain control If Option 3C is ordered the front panel potentiometer will provide a minimum of 30 dB gain control E ...

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Страница 22: ...tion G Channel Memory The converter has thirty memories for frequency settings numbered 00 to 29 3 2 2 INTERNAL CONTROLS Figure 1 3 A Power Supply Voltage Adjustment Adjustment of the DC power supplies within the specified tolerances may be made using an insulated tuning tool refer to Section 4 3 4 and Appendix after removal of the power supply cover ...

Страница 23: ...o indicate local mode All command inputs are from the front panel The unit will not accept instructions through the remote interface connector J6 but will report frequency mode and status 3 3 1 1 Set Frequency To set the frequency of the converter A Enter the desired frequency in MHz using the numbered keys and the decimal point B Press ENT 3 3 1 2 Channel Memory The converter has thirty memories ...

Страница 24: ...e is made by the converter All messages addressed to the converter are normally acknowledged with a response message Before sending the response message a converter configured for RS422A will check for no activity on the communication bus for a period of at least one character time If the bus is active the response message will be cancelled This allows a controller to rapidly update a number of de...

Страница 25: ...ter or monitor traffic on the communication bus 3 3 2 2 1 Header Byte The Header byte is 7BH ASCII character 3 3 2 2 2 Device Address Byte The Device Address may take on the values from 40H to 5FH 32 possible addresses 3 3 2 2 3 Command Error Codes COMMAND CODES ASCII Code Character Function 46H F Frequency Set 4DH M Mute 41H A Status All 3FH Status Faults ERROR CODES ASCII Code Character Function...

Страница 26: ...efore taking the modulo 95 sum The value 32 is added to the final sum to obtain the Checksum value All values are in decimal Checksum Mod character value 32 95 32 3 3 2 3 Command Codes The following paragraphs describe each of the command codes 3 3 2 3 1 Frequency Code F The Frequency command requires a 7 or 8 digit parameter which sets the frequency of the converter in kHz Assuming no error condi...

Страница 27: ... Mute indicator m 0 or 1 ASCII numeric character 0 Mute off 1 Mute on Component Fault Status indicator a f 0 or 1 ASCII numeric character 0 No fault 1 Fault a through f indicate the status of the six component fault lines 3 3 2 3 4 Status Faults Code Optional The Status Faults command requires no parameters The converter responds in both Local and Remote mode with the component fault status Remote...

Страница 28: ...n the following code switch off 1 switch on 0 S8 S7 Baud Rate 0 0 1200 0 1 2400 1 0 4800 1 1 9600 S6 Parity 0 Even 1 Odd 3 3 2 5 Programming Examples The converter address is 41H ASCII code A The following are typical commands and responses showing the ASCII printable characters A Set the frequency to 3725 000 MHz Controller Command Converter Response AF3725000 0 AF a or possible error code Ac B S...

Страница 29: ...ion DATA IN must be externally wired to DATA OUT and DATA IN externally wired to DATA OUT RS232 J6 1 Ground 2 TX Data 3 RCV Data 4 RTS 5 CTS 7 Ground Contact Closure J6 1 F14 2 F08 3 F05 4 F02 5 F01 6 COM 10 F06 11 F10 12 F12 13 F15 14 F16 15 F04 16 F03 17 F09 23 F07 24 F13 25 F11 IEEE 488 IEEE 488 compatible 24 contact connector receptacle ...

Страница 30: ...e 9300 Series Converter performs the basic Talker and Listener functions as specified in IEEE Standard 488 It is also capable of sending a Service Request to the IEEE 488 controller and will respond with a status word when the Serial Poll Enable message is received 3 3 2 9 1 Device Address Service Request Enable The device address is set with the ADDRESS DIP switch on the rear panel S1 2 3 4 and 5...

Страница 31: ... Channel nn This message sets the converter to the frequency previously stored in channel memory nn It also unmutes the converter C05 Recall frequency stored in Channel 05 3 3 2 9 2 5 Data Format These messages determine the converter s response when it is addressed to talk by the IEEE 488 Controller A Data Format message remains in effect until another one is received DF is the power on default f...

Страница 32: ...ect f LO2 Level Detect The Status Alarm readout option is required for this format 3 3 2 9 2 8 Status All Format Data Format Converter Response DA FffffffffLlMm abcdef The DA format is a combination of the DF and D formats The Status Alarm readout option is required 3 3 2 9 2 9 Channel Format Data Format Converter Response DCnn CnnFffffffff The DCnn format returns the frequency stored in channel n...

Страница 33: ...ent fault line caused the service request a 0 b 1 c 2 etc The IEEE 488 Controller may perform a Serial Poll without a service request being generated by the converter the request may have been generated from another device on the bus In this case the response will be the same message the data field will be the same as the last status word sent however bit 6 will be at 0 3 3 3 EMERGENCY OPERATION I...

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Страница 35: ... out of band signals resulting from the first conversion The signal is then fed to the converter module The input signal is fed to a mixer which converts the input signal to the output IF frequency The signal is then fed through a low pass filter which rejects the local oscillator signal to a PIN diode attenuator providing gain control for the system amplified and output from the system If Option ...

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Страница 39: ...2 4 2 GHz B Insertion Loss 0 3 dB C Input Output VSWR 1 1 1 D Isolation 23 dB minimum E Connectors 1 Input N female 2 Output SMA female A2A2 Description Filter Part Number FLT 112385 3 95 XXXXX Function Out of band rejection Design Six pole combline Specifications A Frequency 3 7 4 2 GHz B Insertion Loss 0 3 dB C Input Output VSWR 1 2 1 D Parabolic Group Delay 1 nsec 500 MHz E Connectors SMA male ...

Страница 40: ...on A2A4 Part Number M30 3 95 1 1 XXXXX Function Frequency translation Design Double balanced Specifications A Input Frequency 3 7 4 2 GHz B Output Frequency 1100 20 MHz C LO Frequency 4800 5300 MHz D Conversion Loss 6 5 dB nominal E LO Power 10 dBm F Isolation 1 LO Output 20 dB minimum 2 LO Input 20 dB minimum G Power Output 1 dB Compression 5 dBm minimum H Connectors 1 Input SMA male 2 Output SMA...

Страница 41: ...0 MHz B Gain 25 dB nominal C VSWR Input Output 1 2 1 D Power Output 1 dB Compression 10 dBm E Noise Figure 3 dB nominal F DC Voltage 20 volts G Connectors 1 Input SMA female 2 Output SMA female 3 DC Solder filter A2A6 Description Isolator Part Number 113942 4 Specifications A Frequency 1100 50 MHz B Insertion Loss 0 5 dB C Input Output VSWR 1 1 1 D Isolation 23 dB minimum E Connectors SMA female ...

Страница 42: ...F passband out of band rejection Design Eight pole rod combline bandpass Specifications A Frequency 1100 20 MHz B Insertion Loss 1 0 dB C VSWR Input Output 25 dB D Parabolic Group Delay 3 nsec 20 MHz E Rejection 45 dB 70 MHz F Connectors 1 Input SMA male 2 Output SMA male ...

Страница 43: ... 90 MHz 3 LO 1170 MHz at 10 dBm B Gain 16 dB nominal 31 dB nominal Option 16A 41 dB nominal Option 16C C Output VSWR 26 dB 75 ohms 50 ohms with Option 15 D Input VSWR 23 dB 50 ohms E Power Output 1 dB Compression 10 dBm minimum F DC Voltage 20 volts G Gain Control 6 dB minimum 30 dB with Option 3C H IF Monitor Output Option 2B 20 dBc nominal I Local Oscillator Monitor Output 20 dBc nominal J Conne...

Страница 44: ...ly controlled oven housing The specifications of the crystal oscillator are A Frequency 5 000000 MHz B Power Outputs 0 3 dBm C DC Power 1 Warm Up 20V 150 mA 2 Normal 20V 70 mA stabilized at 25 C D Oven Stabilization Time 20 minutes 25 C E Connectors 1 RF SMA female 2 DC Solder filter Refer to the index for description and data sheets for higher stability reference sources when installed Option 10 ...

Страница 45: ...hesized source are A Frequency Output 4800 5300 MHz B Frequency Input 5 MHz C Power Output 13 dBm minimum D Power Input 0 3 dBm E DC Power 20V at 1 0A 5V at 1 5A F Phase Lock TP DC voltage variable with frequency G Connectors 1 RF SMA female 2 DC D connector Function Pin 20V 1 6 5V 4 8 Ground 5 9 Phase Voltage 2 Alarm 3 3 Control Ribbon cable An isolator A3A3 and fixed attenuator A3A5 follow the p...

Страница 46: ...fference between these two signals A frequency difference between the two signals results in a sweep voltage which is applied to the voltage tuned capacitor of the VTO As the VTO is being swept through its frequency range comparison of frequency is made in the phase detector When the divided VTO frequency is at the same frequency as the input reference the sweep is disabled and the VTO is locked t...

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Страница 48: ...cy synthesizer via the interface ICs When the remote bus option is used the microprocessor on chip serial I O port is used with the interface ICs to provide an RS422 485 interface Front panel keys are monitored by the keyboard encoder The keys are scanned at a periodic rate and an interrupt is generated whenever a key is pressed Key debouncing and multiple key lockout are also provided in the chip...

Страница 49: ...20 volts for the converter s RF components Voltage Setting Tolerance 0 25 volts Overvoltage protection is included for all sections of the power supply A low pass filter A1A4 follows the RF component sections of the power supply to aid in the rejection of power supply noise A balanced configuration is used with a series inductor and shunt electrolytic capacitor Voltage is set and monitored after t...

Страница 50: ...des a permanent record of converter operation and compares it to factory provided data By doing so any long term degradation erratic or abnormal performance can be detected early The overall converter performance parameters that are most indicative of individual system component performance and encompass all system components for correct overall converter performance are converter gain and local o...

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Страница 52: ...e reference source used Frequency may be monitored at the rear panel LO test points 5 2 4 LOCAL OSCILLATOR PHASE LOCK TEST POINT Phase Voltage The phase lock test point phase voltage of the phase lock source indicates proper locking conditions and frequency for the basic voltage tuned oscillator The following voltages will be observed at 25 C ambient A IF LO 10 2 volts in lock 1 volt or 18 volts o...

Страница 53: ...R To isolate the malfunctioning component in the local oscillator chain Section 4 3 2 should first be carefully studied for theory of operation The following voltage check should be performed before proceeding Check DC voltages to phase lock oscillators A scope AC coupled should be applied to voltage line to measure power supply ripple refer to Appendix for specifications If incorrect voltage or e...

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