background image

ADJUSTMENT 

Adjustment          No.        Adjustment Condition & Tuning                      Value      Ref. No. CK. Point 

 

Checking                   Check that the deviation in the bandwidth 

Deviation                  is as the values below. 

                                                                  ± 3.6 ~        

   ANT Con     

     WIDE           ± 3.60 ~ 4.50 kHz            ±4.5kHz     

                                             NARROW          ± 1.80 ~ 2.30 kHz            ± 1.8 ~ 

                                                                                                        ±2.3kHz 

Checking Modula-       Check that the modulation in the bandwidth 

tion                          is as the value below 

 

       WIDE/NARROW            2.8 ~ 6 mV rms           2.8-6mV                 ANT Con 

                                       WIDE:±3 KHz DEV ; NARROW:±1.5 KHz  DEV            rms 

CTCSS Deviation        Connect a linear detector via the attenuator        

Adjustment               to the  antenna terminal, Set the transceiver 

                               to wide ch and CTCSS 88.5Hz.   

                               Transmit while making sure no input is 

                                applied to the mic (or mic terminal)  

 

                                       Adjust. Freq.  Near Center Frequency                       Adj.Soft   ANT Con 

                                            WIDE                   ± 0.7 kHz                     ±0.7kHz  CTCS/DTCS                                    

 

Checking CTCSS/       then reset so that each signaling type  

DTCS/2/5 TONE/          can be output. 

DTMF DEVIATION                        DTCS    CODE 007 

                                               CTCSS   88.5 Hz 

                                              5 TONE  CCIR 11111 

                                              DTMF    # (Auto Dial Setting) 

                                              2 TONE  349.0 Hz 

                                

                                check that each version in it’s bandwidth 

                                is as the values below, respectively. 

 

                                         Wide CTCSS/DTCS        ± 0.50~± 0.90kHz    

±0.5-0.9kHz  

               ANT Con 

                                         Wide 2/5 TONE/         

 ± 2.40~± 3.60kHz    

±2.4-3.6kHz

 

                                                              DTMF 

                                        Narrow CTCSS/DTCS      ± 0.25~± 0.45kHz    

±.25-.45kHz

 

                                        Narrow 2/5 TONE/       ± 1.20~± 1.80kHz     

±1.2-1.8kHz

 

                                                              DTMF 

                                                                   

 

 

Summary of Contents for IC-F620

Page 1: ...ring RX and C134 during TX Adj Freq 400 MHz RX Side 1 0V 1 0V C133 LV TX Side 1 1V 1 1V C134 Lock Voltage Set the transceiver to the 490 MHz Check and check that all is within specification Adj Freq 4...

Page 2: ...below Hi Power 20 0 30 0W 20 30W ANT Con L2 Power 8 0 12 5W 8 12 5W L1 Power 2 0 3 0W 2 0 3 0W Current Check at Check that the in band power consumption TX is within the specifications below Hi Power...

Page 3: ...minal Connect a millivolt meter or a 600 ohm out put impedance CR oscillator to the trans ceiver s mic terminal Modulation Use the adjustment software to adjust the Balance modulation analyzer s detec...

Page 4: ...t to the antenna terminal Set the transceiver to wide ch and CTCSS 88 5Hz Transmit while making sure no input is applied to the mic or mic terminal Adjust Freq Near Center Frequency Adj Soft ANT Con W...

Page 5: ...Hz Check that the TX S N in the bandwidth is as the values below WIDE More than 40 dB Over 40dB ANT Con NARROW More than 34 dB Over 34dB Adjusting RX When there is no particular set limits set Sensiti...

Page 6: ...rrow channels also Adjusting the This Adjustment is after the RX Sencitivity S3 LEVEL Finish Set the signal generator in the following way for wide channels Adjust Freq Near Greatest Lo band F SG Inpu...

Page 7: ...z SG Output Level 14 dBu In this condition using the adjustment Adj Soft software raise the squelch D A value until SQL the squelch closes once then lower the D A value again and adjust until the sque...

Page 8: ...e so that the AF output is 50 of the rated value Check that the RX S N in the bandwidth is as the values below WIDE More than 40 dB Over 40dB ANT Con NARROW More than 34 dB Over 34dB SP Jack Checking...

Reviews: