Kenwood DG-5 Скачать руководство пользователя страница 12 | Manualshive

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Содержание DG-5

Страница 1: ......

Страница 2: ...CTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 CHECKING AND CAUTIONS BEFORE USE CONTROLS AND WAHT THEY DO OPERATING INSTRUCTIONS TROUBLESHOOTING GUIDE REFERENCE OSCILLATOR FREQUENCY CALLIBRATION CIRCUIT DESCRIPTION 3 3 4 6 10 12 2 ...

Страница 3: ...ight 5 Simple Connection With TS 520S Your DG 5 can be easily interconnected with the TS 520S by plugging the heter odyne VFO and carrier cables and the power cord only These signal cables are individual to minimize spurious and other undesirable signal levels 6 Available for Use With TS 520 Notice that your DG 5 is tailored specifically for the new TS 520S But if you have the previous TS 520 you ...

Страница 4: ...a defect of the signal connection cable s 2 DISPLAY COUNTER Selector DISPLAY position The DG 5 displays the TS 520S operating frequencies COUNTER position The DG 5 operates as frequency counter having DC power supplied from the TS 520S To input a given signal connect to the COUNT IN connector on the rear panel 3 DH Display Hold Switch Used to hold the input channel frequency dis played as the time...

Страница 5: ...TS 520S To connect to it use the supplied signal cable 5 CAL Connector This connector outputs the internal reference oscillator signal to calibrate its frequency by producing zero beat with the WWV or similar standard radio frequencies Connected to the TS 520S X VERTER IN connector with the supplied signal cable Keep the cable dis connected when not in calibration 6 DIM Dimmer Switch The DIM switc...

Страница 6: ...nels Correct connection allows the DG 5 to work immediately when the TS 520S POWER switch is turned on The DG 5 is designed to well match with the TS 520S when placed on it 3 2 OPERATION FOR FREQUENCY DISPLAY The DG 5 operates with the HET V FO and CAR signals as well as the DC power supplied from the TS 520S The DG 5 therefore displays the operating frequency as controlling the TS 520S The follow...

Страница 7: ... state where no digits appear FIX is the fixed channel frequency If using a remote VFO for example the KENWOOD s Model VFO 520S notice that the display frequency will change as the remote VFO FUNCTION switch turns For details reference should be made to its operating manual 5 RIT control and switch The RIT control changes the receiver tuning frequency alone when the RIT switch is pressed in ON Whi...

Страница 8: ...n cables particularly in measuring low frequencies This could result in irregular frequency counting To prevent such an adverse effect also the series resistor or attenuator is adequate The COUNT IN connector withstand voltage is 200V DC at the peak value or 5V AC at the root mean square value For measuring the frequencies at most electron tube circuits and at the outputs of transmitter final stag...

Страница 9: ...iately returned to the original channel Therefore the DH feature is avaiable as a sort of memo In the DH mode of operation the shifted frequency is to be read on the analog Main Tuning knob and Sub dial of the TS 520S If used as the frequency counter your DG 5 also can hold the displayed frequency as long as necessary with the DH switch in the ON position 3 5 AUXILIARY FOOT INSTALLA TION The auxil...

Страница 10: ... Display will not read correct frequency Wrong signal cable connection No signal comes to CAR connector when display reads HET frequency minus 10MHz Check to see whether signal cable connection is correct or not 4 Turning Main Tun ing knob will not vary display frequen cy Wrong signal cable connection DH switch is in ON Check to see whether signal cable connection is correct or not Set DH switch t...

Страница 11: ...ference oscillator fundamental 1 MHz will superimpose on the 15MHz WWV signal Then you will hear of an impure double beat 3 Adjust the trimmer located inside the bottom cover using an adjust screwdriver until the impure beat becomes clear as shown in Figure 7 For more precise adjust ment the S meter on the TS 520S is helpful The S meter pointer will vibrate finely on either side of the true calibr...

Страница 12: ...HET 10MHz The subtracted frequency presets the upper counter The other signal fed to the upper counter is composed in the manner that the carrier frequency is mixed with the 10MHz reference frequency and the resultant is further mixed with the VFO fre quency 10MHz CAR VFO This signal is added to the one preset by the lower counter that is 10MHz CAR VFO HET 10MHz HET VFO CAR As explained above you ...

Страница 13: ...BLOCK DIAGRAM Figure 8 Block Diagram ...

Страница 14: ...SCHEMATIC DIAGRAM Figure 9 Schematic Diagram ...

Страница 15: ...mpedance Approx 5k1 2 less than 22pF Accuracy Reference time 0 1 count Count Time 0 1 sec Least Significant Digit 0 1 kHz REFERNCE TIME Frequency 10MHz Error Less than 1 x 10 5 at room temperature Temp Stability Grater than 3 x 10 5 at 0 C to 50 C Aging Rate Lower than 1 x 10 6 month at room temperature GENERAL Ambient Temperature 10 C to 50 C Power Supplied from TS 520S External Power 12 to 16V 0...

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