Icom IC-775DSP [31/67] If notch operation

Содержание

• Important explicit definitions 2
• Precautions 2
• Unpacking 2
• Table of contents 3
• Front panel 4
• Function 4
• Panel description 4
• Function 5
• Function 6
• Function 7
• Setting procedure 7
• Audio peak filter control apf 10
• Clear switch clear p 32 10
• Clears the rit zi tx shift frequency 10
• Dtx switch zl tx p 32 10
• Function 10
• Inner control p 30 varies the peak frequency of the audio peak filter to pick out a cw signal from interference while the apf switch is on 10
• Panel description 10
• Rit switch rit p 32 10
• Rit zitx control rit zltx p 32 10
• Scan switch scan p 53 10
• Shifts the receive and or transmit frequency while the rit and or j tx functions are on 10
• Starts and stops a scan 10
• Turns the rit function on and off 10
• Turns the z1tx function on and off 10
• Function 11
• Filter switch condition and selected filters 12
• Filter switches wide nar 455k 12
• Function 12
• Nar9m p 31 select the if filters 12
• P 28 adjust the receiver s passband width of the 455 khz and 9 mhz if filters for the inner and outer controls respectively 12
• Panel description 12
• Passband tuning controls twin pbt 12
• Simplified example of the pbt function 12
• Function display 13
• Rear panel 14
• Ac fuse holder fuse p 56 15
• Ac power socket ac p 15 15
• Acc sockets 15
• Alc input jack alc p 17 15
• Connects the supplied ac power cable to an ac outlet 2 versions are available 100 120 v ac 50 60 hz version 220 240 v ac 50 60 hz version 15
• Connects to the alc output jack of a non lcom linear amplifier 15
• Earning 15
• Fin no 15
• Fuse this could cause a fire 15
• His could cause a fire or ruin the transceiver 15
• Holds a fuse for the internal ac power supply 100 120 v versions 12 a fgmb 220 240 v versions 5 a 15
• Ids the suggested voltage for each ver 15
• Never apply ac voltage 15
• Never use a non rated 15
• Panel description 15
• Pin name description specifications 15
• Pl c 1 15
• Pm name description specifications 15
• Rear panel 15
• Technical information 15
• Warning 15
• Caution do not short pin 2 to ground as this can damage the internal 8 v regulator 16
• Change the main readout frequency or memory channel 16
• Hm 36 schematic diagram 16
• Microphone connector 16
• Microphone optional hm 36 16
• O up down switches up dn 16
• Panel description 16
• Ptt switch p 22 16
• Push and hold to transmit release to receive 16
• Technical information 16
• Antenna 17
• Arning never 17
• Grounding 17
• Installation and connections 2 17
• Selecting a location 17
• Unpacking 17
• Front panel 18
• Installation and connections 18
• Rear panel 18
• Required connections 18
• Advanced connections 19
• Front panel 19
• Installation and connections 2 19
• Caution 20
• Connecting a non icom linear amplifier 20
• Connecting the ic 2kl 20
• Connecting the ic 4kl 20
• Installation and connections 20
• Linear amplifier connections 20
• Note 1 the specifications for the send relay are 24 v dc 1 a if this level is exceeded a large external relay must be used 20
• Note 2 the alc output level of the linear amplifier must be in the range 0 v to 4 v and the trans ceiver does not accept positive voltage 20
• P caution 20
• Use the anti connector when connecting a linear amplifier 20
• External antenna selector or antenna tuner connections 21
• Transverter jack information 21
• According to the afsk system modulation may become shallow or not occur at all turn the psn 22
• Afsk and sstv connections 22
• Afsk and sstv connections via microphone connector 22
• For dsp equipped type when operating afsk or sstv in ssb mode the 22
• For rtty operation 22
• Fsk and afsk sstv connections 22
• Fsk rtty connection 22
• Installation and connections 22
• Modulation off p 41 to cancel the transmit filter in this case 22
• Priate if filters corresponding to the signal width 22
• The optional 250 hz cw narrow filters may not pass rtty signals be sure to select the appro 22
• To connect a terminal unit tnc or scan converter refer the diagram below 22
• Transmit 2 khz low pass filter is activated at its p default setting p 42 22
• Ascii code for command 17 acceptable characters a z 0 9 _ and space _______ 23
• Cl v connection example the transceiver can be connected through an op tional ct 17 cl v level converter to a personal computer equipped with an rs 232c port the icom communication interface v cl v controls the follow ing functions of the transceiver 23
• Command table 23
• Continues the next letter without a space e g 23
• Controller to ic 775 dsp 23
• Data format the cl v system can be operated using the following data formats data formats differ according to com mand numbers a data area or sub command is added for some commands 23
• Ic 775 dsp to controller 23
• Installation and connections 2 23
• Ng message to controller 23
• Ok message to controller 23
• Os sos 23
• Remote jack cl v information 23
• Up to four icom cl v transceivers or receivers can be connected to a personal computer equipped with an rs 232c port see p 48 for setting the cl v condi tion using the h set mode 23
• After resetting the transceiver set controls and switches as shown in the figure below 24
• Before first applying power make sure all connec tions required for your system are complete by referr ing to section 2 then reset the transceiver using the following procedure 24
• Correct the set mode settings after resetting optional filter settings in h set mode p 47 24
• Cw max clockwise ccw max counterclockwise 24
• Im 3 basic operation 24
• Initial settings 24
• Iu 1пп пп ii iuu uu 24
• Note resetting clears all programmed con tents in memory channels and returns programmed values in the p set and h set modes to default values 24
• Power on 24
• T make sure the transceiver power is off while pushing clear push in power to turn 24
• Turn power on then check the display if any of the following indicators appear turn them off as follows 24
• When first applying power cpu resetting 24
• Basic ssb am operation basic fm operation 25
• Basic cw operation 26
• Basic fsk rtty operation 26
• Vfo description 27
• 2 input the desired frequency 28
• 3 select the desired operating mode with the mode 28
• Basic operation 28
• Direct frequency entry with the keypad 28
• Example 28
• For general coverage receiver use push gene on the keypad 1 3 times 28
• For ham band use j push the desired band key on the keypad 1 3 28
• Frequency setting with the main dial 28
• Function 28
• I снос nn 28
• Inn nn iuu uu 28
• Main readout and the main dial does not function in this case push main lock to deactivate the dial lock function 28
• P note if the main dial lock function is activated ieq3 is indicated in the 28
• Push ent to enter the input frequency 28
• Push main f inp 28
• Rotate the main dial to set the desired frequency 28
• Switches 28
• The transceiver has a keypad for direct frequency entry as described below 28
• Zinn пп c i cuu uu 28
• Advanced tuning functions 29
• Ю юс п пп 29
• 4 function operations 30
• Memo pad operation 30
• If notch operation 31
• Twin pbt operation 31
• Auto notch function 32
• Cw pitch control 32
• Noise reduction 32
• P set mode 32
• Apf operation 33
• Noise blanker 33
• Assband width 34
• Check the interference tone 34
• Cw r mode 34
• Cw reverse mode 34
• Filter selection 34
• Filter selection and p 34
• Filter switch 9 mhz if filter 455 khz if filter 34
• Filter switch condition and selected 34
• Filter switch constru 34
• Filters 34
• Function operations 34
• Iction 34
• Medium medium 34
• Medium narrow 34
• Medium wide 34
• Mhz and 455 khz if filters 34
• Narrow medium optional filters 34
• Narrow narrow passband width are shown at 6 db the optional 250 hz cw narrow filters may not pass rtty signals 34
• Narrower if filter for the 9 mhz or 455 khz if filter respectively 34
• Once or twice to select cw or 34
• Push cw 34
• Push nar 9m or nar 455k to select the 34
• Push wide to select the wider if filters for the 9 34
• Receive audio tone response 34
• Shown in the table at right below 34
• The cw r cw reverse mode receives cw sig nals with a reverse side cw carrier point like that of lsb and usb modes 34
• The filter selection is automatically memorized in each mode 34
• The filter switches select the if passband width as i 34
• Use when interference signals are near the desired signal and you want to change the interference tone 34
• When an optional filter is installed set the optional filter setting in h set mode p 47 optional filters cannot be selected with default setting 34
• Wide does not function in fm mode the switch conditions are memorized in each mode 34
• Wide medium 34
• Wide wide 34
• Practical example 35
• Rit and zitx 35
• Convenient 36
• In nn iu uu 36
• Quick split function 36
• Split frequency operation 36
• 5 push split twice to cancel the function 37
• Channelized split operation 37
• Channelized split operation allows you to set a 37
• Function operations 4 37
• I c ju uu______________ 37
• I i ijj uu 37
• I iu pnn nn 37
• I zion nn 37
• Ii ijj uu 37
• Ijj lili 37
• Iu ioc nn 37
• L 13 05 0 37
• N cuu uu 37
• Nelized split operation on 37
• Practical example 37
• Push split again for 2 sec to turn the chan 37
• Push sub m ch up m ch dn one or more 37
• Quency steps equivalent to the split shift frequency from the receive frequency during split frequency operation the channelized split shift frequency can be programmed from 1 99 khz and can be shifted up to 99 khz 37
• Set the receive frequency push split to turn the split frequency opera 37
• Times to shift the transmit frequency in the pre programmed frequency steps 37
• Tion on 37
• Tor nn i i 37
• Transmit frequency in the pre programmed ire s 37
• Xample split shift frequency 5 khz 37
• Dualwatch operation 38
• I iu zi in nn lot in c iu uu 38
• Monitor function 38
• Meter function 39
• Speech compressor 39
• Swr reading 39
• Vox operation 39
• Electronic cw keyer 40
• Memory keyer 40
• P set mode 40
• Repeater operation 41
• Antenna tuner operation 42
• Band memory for automatic antenna selection 43
• Dial lock function 43
• Iu jjn nn 43
• Piul rnt 5 el 43
• Br 1 3h e 44
• Brl3he 44
• Ds pun e 44
• El els ee 44
• I 5 set mode 44
• P set mode 44
• Pu sh see 44
• Set mode description 44
• G____________________prdle 45
• Prr______________ 45
• Ud prd 45
• _____________ t lpf 45
• Do__________________erl______ 46
• Heb_________________pl eer 46
• N b p__________________ 5eleele 46
• Ncs ee 46
• O___________________ rbeu 46
• R rbbb p 46
• Ripp_________________ erl 46
• Suu _________________p beh 46
• Ens f speech 47
• H set mode 47
• Off _________________ sc res 47
• On sc res 47
• On__________________ ts ru e 47
• Speech 47
• Upn ei speech 47
• Upn f speech 47
• Dd spd 48
• H___________________scspd 48
• La __________________ sc spd 48
• Lu________________ prd ch 48
• Prd ch 48
• Rn e s el 48
• Rnt sel 48
• Ud spd 48
• _______ 48
• R 5pl 1 t 49
• R durl 49
• A bhud 51
• Cl 13 1 51
• H______________ a rddr 51
• Hbh_________________1 rd dr 51
• Memory channel selection 52
• Memory channels 52
• Memory clearing 52
• Memory channel programming 53
• Frequency transferring 54
• Scan edge memory channels 55
• Pre operation 56
• Scan types 56
• Memory scan operation 57
• Programmed scan operation 57
• Select memory scan operation 57
• Frequency calibration approximate 58
• Main dial brake adjustment 58
• Maintenance and adjustment 58
• P set mode 58
• Ac fuse replacement 59
• Cleaning 59
• Lithium backup battery 59
• Mb 19 installation 59
• Warning 59
• Problem possible cause 60
• Problems which are not equipment malfunctions solve it through the use of this chart contact your nearest icom dealer or service center 60
• The following chart is designed to help you correct if you are not able to locate the cause of a problem or 60
• Troubleshooting 60
• Warning 60
• Display 61
• Problem possible cause 61
• Transmit 61
• Troubleshooting 61
• Internal views 62
• Left side view 62
• Top view 62
• If unit 63
• Internal views 63
• Pll unit rf unit 63
• Ex 627 64
• Ic 2kl 64
• Ic at500 64
• Mbs 1 1 options 64
• Ui 100 64
• Cr 282 65
• Fl 101 fl 102 and fl 223 65
• Fl 53a and fl 222 65
• Options 65
• All stated specifications are subject to change without notice or obligation 66
• Antenna 66
• General 66
• Receiver 66
• Specifications 66
• Transmitter 66
• 9 16 kamihigashi hirano ku osaka 547 japan 67
• A 5340s 1ex 67
• Count on us 67
• Icom inc 67

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FUNCTION OPERATIONS 4 Twin PBT operation The twin PBT Passband Tuning function electron ically narrows the receiver s IF passband widths to reduce interference Moving both TWIN PBT con trols to the same position shifts the IF PBT variable ranges are 1 25 kHz in 10 Hz steps TWIN PBT should normally be set to the center positions when there is no interference When PBT is used the audio tone may be changed PBT may not function with some IF filter combi nations Not available for FM mode PBT OPERATION EXAMPLE Both controls at center position Cutting a lower passband Cutting both higher and lower passbands TWIN PBT TWIN PBT TWIN PBT IF center frequency Interference Desired signal IF notch operation The IF notch function attenuates a part of the re ceived signal at the set filtering frequency to eliminate unwanted tones The IF notch function should be turned OFF when there are no unwanted tones and is not available for FM mode This IF notch has a characteristic of max 45 dB attenuation at the center of your set frequency P Auto notch function is separately available DSPP equipped type only for a moving noise signal multiple noise etc p 29 IF NOTCH OPERATION EXAMPLE Moving the filtering frequency to low Center APF NOTCH Moving the filtering frequency to high Notch OFF APF NOTCH Desired signal IF Unwanted tone frequency Unwanted tone frequency 28