JPS6132613A - Adjustment aid device of multichannel radio equipment - Google Patents

Abstract

PURPOSE:To facilitate operator's adjusting operation and to improve the operation efficiency by operating a PLL synthesizer part at a calculated intermediate transmission or reception frequency during transmission or reception in adjustment mode, and displaying the intermediate reception frequency or data on it on a display device. CONSTITUTION:When a mode changeover switch 26 is turned on, the intermediate frequency of an assigned reception frequency set in a ROM22 previously begins to be received automatically with a press-to-talk switch 27 off, and the intermediate frequency is displayed on a display part 24, so an adjusting operator easily sets the frequency of the equipment of a measurement system, e.g. standard signal generator over a look at the display. When the operator finishes adjusting the reception performance and turns on the press-to-talk switch 27, the intermediate frequency of the assigned transmission frequency set previously in the ROM22 begins to be received automatically and the intermediate frequency is displayed on the display part 24. Therefore, the adjusting operator easily sets the frequency of the measuring instrument system over a look at the display.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a multi-channel radio device that employs a PLL synthesizer system, and more particularly to a multi-channel radio device that is equipped with a device that assists in adjustment operations of its receiving section and transmitting section.

In conventional technical commercial radio equipment, the frequency range covered by the radio equipment is as wide as, for example, 20 MHz, but a plurality of transmission and reception frequencies are assigned to one user within a much narrower frequency range. In the case of a multi-channel radio device that uses a PLL synthesizer method, this assignment is made between multiple transmit frequencies and multiple receive frequencies where the frequencies that can be transmitted and received by key input operations are stored in advance in non-volatile memory such as ROM. Gen:7::::工(Z＊'ji(7)!'ft
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When transmitting frequencies are assigned, performance deviations between multiple assigned receiving frequencies, such as receiving sensitivity deviations, and performance deviations between multiple assigned transmitting frequencies, such as transmitting output deviations, are small.
It is important to do so! For this reason, adjustment to reduce the above-mentioned performance deviation is usually performed after frequency allocation.

For example, if we take reception sensitivity as an example, if we adjust the adjustment points of each part so that the reception sensitivity is maximized at one of the allocated frequencies, for example, the highest reception frequency fRH,
As shown in the figure, the deviation from the lowest receiving frequency fRL becomes too large, so as shown in FIG.
, RO is used to minimize the deviation between the assigned frequencies.

In order to perform adjustment using this method, the radio must be set to this intermediate frequency fRo, but since the combinations of multiple frequencies assigned to the radio are different for each radio and there are many types, it is necessary to set the radio to the intermediate frequency fRo. Calculating the frequency was relatively tedious. In addition, conventionally, PL was calculated using the calculated intermediate frequency.
The adjuster had to manually set the frequency of the radio so that the L synthesizer part would operate, which also caused a lack of efficiency.

Problems to be Solved by the Invention The present invention is an improvement over such conventional problems, and an object of the present invention is to make it possible to easily perform the above-mentioned adjustment of a multi-channel radio device.

Means to Solve the Problem Generally, PLL synthesizer type radio equipment can set any channel frequency within the band used by the radio equipment using a voltage-comb oscillator simply by setting division ratio data corresponding to the frequency in the PLL controller. On the other hand, the microcomputer system with a built-in radio can send arbitrary data to the PLL controller, and the frequency data can be processed using the microcomputer's arithmetic function. The present invention focuses on this point, and in order to improve the above problems, as shown in FIG. 1, transmission is performed by key input operation.

A multi-channel radio device employing a PLL synthesizer system that limits receivable frequencies to a plurality of transmitting frequencies and a plurality of receiving frequencies whose receivable frequencies are stored in advance in a memory 1, includes a switch means 2 for setting the radio device in an adjustment mode, and a switch means 2 for setting the radio device in an adjustment mode. intermediate transmission frequency calculation means 3 for calculating the settable intermediate transmission frequency closest to the intermediate frequency between the highest transmission frequency and the lowest transmission frequency specified by the data stored in the memory 1 or data related thereto; Intermediate reception frequency calculation means for calculating a settable intermediate reception frequency or data related thereto that is closest to the intermediate frequency between the highest reception frequency and the lowest reception frequency specified by the data stored in the memory 1 in the adjustment mode. 4, and P-LL when transmitting in adjustment mode.
The synthesizer unit 5 is operated at the calculated intermediate transmission frequency, and this intermediate transmission frequency or data related thereto is displayed on the display 6, and the PLL synthesizer unit 5 is operated at the calculated intermediate transmission frequency during reception in the adjustment mode. An adjustment aid device is added which comprises a control stage 7 which operates at an intermediate reception frequency and causes a display 6 to display this intermediate reception frequency or data relating thereto.

When the operation switch means 2 is operated to put the radio into the adjustment mode, the intermediate transmission frequency calculation means 3' selects the frequency closest to the intermediate frequency of the plurality of transmission frequencies stored in the memory 1 in advance, and the PLL synthesizer section 5. The frequency that can be set is calculated by the intermediate reception frequency calculation means 4,
The frequency that is closest to the intermediate frequency of the plurality of received frequencies stored in the PLL synthesizer section 5 and that can be set by the PLL synthesizer section 5 is calculated. When the wireless device is put into a transmitting state, such as by turning on the breath talk switch, the control means 7 causes the PLL
When the synthesizer unit 5 is operated at the determined intermediate transmission frequency and the intermediate transmission frequency is displayed on the display 6, and when the wireless device is put into the receiving state by turning off the breath talk switch, the PLL synthesizer unit 5 is activated by the control means 7. The intermediate receiving frequency is operated at the determined intermediate receiving frequency, and the intermediate receiving frequency is displayed on the display 6.

Embodiment FIG. 2 shows a block diagram of essential parts of a multi-channel radio device using a PLL synthesizer system and having an adjustment assisting device according to the present invention. In the figure, 10 is a PLL synthesizer section, which includes a voltage controlled oscillator (VCO) 10a, a signal obtained by dividing this output signal by a frequency division ratio given by the ink face 11, and a reference signal of the reference oscillation circuit 12. and a PLL controller 10b that generates a voltage according to the phase difference. P.L.
The output of the L synthesizer section 10 is inputted to the transmitting section 4 by the switching circuit 13 during transmission, and is input to the local section 1 during reception.
5 to the receiving section 16. The transmitter 14 transmits a PL frequency modulated by the audio signal from the microphone 17.
The output of the L synthesizer section 10 is voltage amplified and power amplified, and the transmitted radio wave is emitted from the antenna 19 via the switching circuit 18. The switching circuit 18 switches to the receiving section 16 side during reception, and the received radio wave received by the antenna 19 is input to the receiving section 16 via this switching circuit 18, where it is mixed with the signal from the local section 15 and demodulated. A signal is sent to speaker 20.

The ink face 11 includes a microcomputer 21° display section U, an operation section 5. Mode changeover switch 26. It is connected to the breath talk switch 27 and the microcomputer 2
1 is ROM22. Connected to RAM23.

The ROM 22 is a memory that stores frequency division ratio data corresponding to a plurality of transmission frequencies and a plurality of reception frequencies assigned to the radio device, and for example, 4 waves (f T
l> r T2> f T3> f T4), and the reception frequency is 4 waves (r R1> t R2> f R3
> f R4) corresponding frequency division ratio data (NTI to NT
4. NRI to NR4) are stored. The operation unit 5 has transmit and receive channel buttons, and the microcomputer 21 reads the frequency division ratio data corresponding to the pressed channel button from the ROM 22 and sends it to the interface 11.
The transmitting frequency and receiving frequency of the radio device are controlled by feeding it to the PLL synthesizer section IO via the PLL synthesizer section IO.

Further, the microcomputer 21 displays a frequency corresponding to the frequency division ratio given to the PLL synthesizer section 10 on the display section U via the ink face 11. send.

Reception switching is performed by turning on and off the breath-talk switch 27. When the breath-talk switch 27 is off, the microcomputer 21 switches the switching circuits 13 and 18 to the receiving side, and when the breath-talk switch 27 is on, the microcomputer 21 switches them to the receiving side. Switch to the sending side. At the same time, the transmitter 14. The power supply to the receiving section 16 is also switched. Mode changeover switch 26
is a switch for setting whether the radio is in the normal operating state or in adjustment mode. Interface 1
1 to be read by the microcomputer 21.

As shown in FIG. 3, when the power is turned on and the mode changeover switch 26 is not turned on, the microcomputer 21 first operates in the normal mode and controls the original operation of the radio. When the mode changeover switch 26 is turned on, the microcomputer 21 shifts to the adjustment mode and executes the processing shown in FIG. 4. In other words, when in adjustment mode,
The microcomputer 21 first generates frequency division ratio data NTI corresponding to the highest frequency f TH (f Tl in the above example) and the lowest frequency f TL (f T4 in the above example) from the transmission frequency group stored in the ROM 22. Search for the frequency division ratio data NT4, and find the frequency division ratio data N corresponding to the intermediate frequency between the highest frequency fTH and the lowest frequency fTL.
Calculate Tl'l. However, the PLL synthesizer section 10
Since the frequency variable steps are discrete, such as 25 KHz, it is not always possible to obtain a frequency division ratio corresponding to the intermediate frequency f↑0 between the highest frequency fTH and the lowest frequency fTL. Find the frequency division ratio closest to the frequency ratio and use it. Similarly, the microcomputer 21 uses division ratio data NRI corresponding to the highest frequency f RH (f R1 in the above example) and the lowest frequency f RL (f R4 in the above example) from the reception frequency group stored in the ROM 22. The corresponding frequency division ratio data NR4 is searched, and the frequency division ratio data NRM corresponding to the intermediate frequency fRo between the highest frequency fRH and the lowest frequency fRL is calculated. However, in this case as well, if there is no frequency division ratio corresponding to the frequency fRO intermediate between the highest frequency fRH and the lowest frequency fRL, the frequency division ratio closest to that frequency division ratio is found and used.

Next, the microcomputer 21 determines whether the breath talk switch 27 is on or not, and if it is on, the microcomputer 21 uses the division ratio data NTM corresponding to the intermediate transmission frequency fTO obtained above.
via the interface 11 to the PLL synthesizer section 1
0, and calculates the frequency corresponding to the frequency division ratio data NTM, displays this on the display unit U, and switches the switching circuit 13.1.
8 to the transmitting side and turn on transmission. Furthermore, when the breath talk switch 27 is off, the frequency division ratio data NRM corresponding to the intermediate reception frequency fRO obtained above is provided to the PLL synthesizer section 10 via the interface 11, and the frequency division ratio data NRM corresponding to the frequency division ratio data NRM is supplied via the interface 11. The frequency to be transmitted is calculated and displayed on the display unit U, and the switching circuits 13 and 18 are switched to the receiving side to put the wireless device in the receiving state.

Since this embodiment has such a configuration, when the mode changeover switch 26 is turned on, and the breath talk switch 27 is off, the mode is automatically changed to a state in which reception is performed at an intermediate frequency among the allocated reception frequencies preset in the ROM 22. The intermediate frequency is displayed on the display unit U, so
The adjuster can easily set the frequency of measurement system equipment, such as a standard signal generator, by looking at this display. The adjuster completes the reception performance adjustment by, for example, adjusting the bandpass filter in front of the first mixer, adjusting the voltage-controlled oscillator 10a, etc., and then presses the button) - Kuisochi 27
When turned on, the transmission automatically shifts to a state in which a frequency intermediate between the assigned transmission frequencies preset in the ROM 22 is transmitted, and the intermediate frequency is displayed on the display unit U. Therefore, the adjuster can easily set the frequency of the measuring instrument system by looking at the display, and can, for example, adjust the power of the transmitter 14 by one step. When the adjustment is completed, the mode is shifted to the normal mode by turning off the power or turning off the mode changeover switch.

In addition, in the above embodiment, the intermediate transmission frequency and the intermediate reception frequency are displayed on the display unit U, but data related to them such as frequency division ratio data or channel number may also be displayed. .

As described in detail, according to the present invention, by simply switching to the adjustment mode, it becomes possible to transmit and receive at a frequency intermediate between a plurality of pre-assigned transmit frequencies and receive frequencies, and also at the intermediate frequency. Or, data related to this, such as frequency division ratio data and channel number, will be displayed on the display.
The adjuster can easily know the frequency to be adjusted, and can easily perform adjustment work.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of the configuration of the present invention, Fig. 2 is a block diagram of main parts of a multi-channel radio device adopting a PLL synthesizer system having an adjustment assisting device of the present invention, and Figs. 3 and 4 are software of the present invention. Flowchart showing an example of the configuration, fifth
Figures 1 and 2 are diagrams illustrating differences in performance deviation due to differences in frequency to be adjusted. 10 is a PLU synthesizer section, 10a is a voltage controlled oscillator, 10b is a PLL controller, 11 is an ink face, 12 is a reference oscillation circuit, 13.18 is a switching circuit, 14
is a transmitter, 15 is a local section, 16 is a receiver, 17 is a microphone, 19 is an antenna, 20 is a speaker, 21
is a microcomputer, 22 is a ROM, and 23 is a RAM
, 24 is a display section, δ is an operating section, A is a mode changeover switch, 27 is a Breathtalk inch, and 2 is an audio amplification circuit.

Claims (1)

[Claims] In a multi-channel radio that uses a PLL synthesizer system, which limits the frequencies that can be transmitted and received by key input to multiple transmission frequencies and multiple reception frequencies that are specified by data stored in memory in advance, the radio is placed in adjustment mode. a settable intermediate transmission frequency that is closest to a frequency intermediate between the highest transmission frequency and the lowest transmission frequency specified by the data stored in the memory in the adjustment mode, or data related thereto; intermediate transmission frequency calculation means to calculate, and a settable intermediate reception frequency closest to the intermediate frequency between the highest reception frequency and the lowest reception frequency specified by the data stored in the memory in the adjustment mode, or related thereto; an intermediate reception frequency calculating means for calculating data; and operating a PLL synthesizer section at the calculated intermediate transmission frequency during transmission in the adjustment mode, and displaying the intermediate transmission frequency or data related thereto on a display; The present invention is characterized by comprising a control means for operating the PLL synthesizer section at the calculated intermediate reception frequency and displaying the intermediate reception frequency or data related thereto on a display during reception in the adjustment mode. Channel radio adjustment aid.