JPH0311982Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a dial indicator provided on a transceiver panel.

[Prior Art] In a conventional transceiver, as shown in FIG. A red LED (light emitting diode) that indicates BUSY
An indicator 5 consisting of an LED that emits green light to indicate (reception) is provided.

In such a transceiver, meter 4
Because the operator had to turn the dial 2 while observing the vibration of the camera, or adjust the dial 2 after determining the color of the light-emitting display on the indicator 5, quick operation was not possible.

[Problems to be solved by the invention] The invention was developed in view of the above points, and includes a plurality of LEDs of different colors built into the indicator of the dial to detect the presence or absence of a received signal and the presence or absence of a modulated signal during transmission. The purpose is to provide dial indicators that can monitor the status of transmission and reception.

[Means for solving the problem] The green and red LEDs built into the dial indicator are connected between the power supply and the collector of each transistor whose emitter is grounded, and the reception selection signal and transmission are sent to the base of the transistor connected to the green LED. This is a circuit in which a modulation signal is applied in parallel through a diode, and a transmission selection signal and a reception signal are applied in parallel to the base of a red LED transistor through a diode.

[Example] An embodiment of the present invention will be described with reference to the drawings.

FIG. 2 is a front view of a transceiver equipped with a dial index of the present invention, and FIG. 3 is a wiring diagram of a plurality of multicolor LEDs built into the dial index.

In FIGS. 2 and 3, the same parts as in FIG. 1 are given the same reference numerals. In FIG. 2, an indicator 3 having a built-in multicolor LED is arranged above a dial 2 provided in the center of the panel 1. The LED built into index 3 includes a green diode _D1 and a red diode _D2 in the same package. From terminal E ₀ of the power supply forward LEDD ₁ and resistor R ₁
and the collector of transistor _G1 are connected in series,
The emitter of transistor G ₁ is grounded, and the output sides of diode D ₃ connected in the forward direction from terminal E ₁ and diode D ₄ connected in the forward direction from terminal E ₂ are both connected to resistor R ₂ . The other end of ₂ is the circuit connected to the base of transistor G ₁ and the terminal of the power supply.
E ₀ forward LEDD ₂ and resistor R ₃ and transistor
Connect the collector of G ₂ in series with the collector of transistor G ₂
The emitter of is grounded, the diode _D5 is connected in the forward direction from the terminal _E3 , and the diode _D6 is connected in the forward direction from the terminal _E4.The output sides of the two diodes _D5 and _D6 are both connected to one end of the resistor 4. The other end is connected to the base of transistor _G2 .

Terminal _E1 becomes "H" (high level) during reception, transistor _G1 becomes conductive, and _LEDD1 emits green color.
Next, when the modulation signal for transmission is applied to the terminal _E2 , it becomes "H", making the transistor _G1 conductive and causing the _LEDD1 to emit a green color.

The terminal _E3 becomes "H" level in the transmitting state, turns on the transistor _G2 , and causes the red _LEDD2 to emit light.

Terminal _E4 goes “H” when a received signal is applied
level and transistor _G2 becomes conductive and turns red.
Color LEDD ₂ .

To explain the operation, when in the reception state and no reception signal arrives, only the terminal _E1 is "H" and all other terminals are "L", so only the transistor _G1 becomes conductive and the LEDD ₁ produces green color.

If a received signal arrives in this state, the terminal
Since E ₄ becomes “H” level, transistor G ₂
conducts and LEDD ₂ lights up, emitting red light.

Therefore, green LEDD ₁ and red LEDD ₂ housed in the same index package will light up.
Visually, it appears as if a yellow LED is lit.

Next, when transmission is selected, only terminal _E3 becomes “H” level, so the corresponding transistor
G ₂ is conductive and turns LEDD ₂ red. Furthermore, when a transmission modulation signal is added in this state,
A signal appears at terminal 2 and becomes "H" level, making transistor _G1 conductive.

Therefore, LEDD ₁ will turn green,
Due to the green and red coloring of LEDD ₁ and LEDD ₂ , it visually feels yellow.

That is, by adding a green color depending on the transmission pause state and the strength of the modulation signal, the quality of the transmission output can be determined by the rate of change in color. Also, in the case of reception, by tuning from a no-signal state, it is possible to judge whether there is complete tuning or a weak signal by looking at the degree of discoloration.

[Effects of the invention] As mentioned above, in the present invention, by incorporating an LED capable of emitting multicolor light into the index of the dial, it is possible to confirm the arrival of a signal during reception frequency tuning operation, and to check the modulation signal during transmission. By checking the strength and weakness of the transmission, the transmission status can be accurately grasped, which has a great practical effect.

[Brief explanation of the drawing]

Figure 1 is a front view of a transceiver equipped with a conventional dial index, Figure 2 is a front view of a transceiver equipped with a dial index showing an embodiment of the present invention, and Figure 3 is a front view of a transceiver equipped with a dial index of the present invention. LED
It is a circuit diagram of a display. 1...Panel, 2...Dial, 3...Indicator,
4...meter, 5...indicator, _D1 , _D2 ...
...LED, D ₃ , D ₄ , D ₅ , D ₆ ... Diode, G ₁ ,
G ₂ ...Transistor, R ₁ , R ₂ , R ₃ , R ₄ ... Fixed resistance, E ₀ , E ₁ , E ₂ , E ₃ , E ₄ ... Terminal.

Claims (1)

[Scope of utility model registration request] An indicator with built-in LEDs of multiple different colors is installed near the dial on the panel, and when there is a reception status and no signal, the LED of the first color lights up, and a reception detection signal is sent by inputting the reception signal. and a means for detecting reception synchronization based on the degree of discoloration of the mixed color of both LEDs by emitting a second color LED, and a means for emitting a color from the second color LED in the transmitting state, modulating it, and transmitting output. A transceiver characterized in that the transceiver is equipped with means for causing an LED of a first color to develop a color using a modulation signal, and for monitoring a transmitting operation based on the degree of color change of the mixed color of both the first and second LEDs. dial indicator.