JPH0351767A - signal input device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a signal input device used in a digital oscilloscope or the like.

Conventional technology This type of signal input device is called a probe, and a conventional probe has the function of extracting a signal while minimizing disturbance of the signal state at the point being measured and transmitting it to an oscilloscope. . As a probe for transmitting data to an oscilloscope, a 9MΩ resistor is built into the tip of the probe body.
There are non-resonant passive probes that have a compensation capacitor built into the connector for connecting to an oscilloscope, and active FET probes that have a built-in FET at the tip of the glove body and an amplifier installed near the connector for connecting to the oscilloscope. Probes and the like are known.

FIG. 6 shows a conventional glove 40.

Reference numeral 41 denotes a glove body, which includes a cable 43 on one side of the probe body 41 and a probe 45 on the other side. The cable 43 has a connector (not shown) for connecting to an oscilloscope (not shown), and the probe 45 contacts the point to be measured to extract signal current, voltage, etc. and transmit it to the oscilloscope.

Problems to be Solved by the Invention However, in the above-mentioned conventional glove, the probe body 4
It only has the function of performing probing by contacting the probe 45 provided in the probe 1 with the point to be measured.

For this reason, you can use two probes with both hands at the same time,
If you are using one hand to adjust the variable resistor in the circuit under test and the other hand is doing blobbing, and you are trying to adjust the vertical position of the oscilloscope or the trigger level, etc., your hands are occupied, so you cannot use the oscilloscope. There were some problems, such as the fact that it was difficult to operate.

The present invention solves the above-mentioned conventional problems, and aims to provide a signal input device that can operate an oscilloscope during probing work.

Means for Solving the Problems In order to achieve the above object, the signal input device according to the present invention is provided with an operating section for adjusting the oscilloscope on the support that supports the probe, and an operation section for adjusting the oscilloscope. The corresponding signal is transmitted to the oscilloscope.

Effect: Accordingly, in the signal input device according to the present invention, the oscilloscope can be adjusted by moving the operating section with a fingertip or the like, so that adjustment can be made while probing.

Example Hereinafter, the present invention will be explained based on FIGS. 1 to 5.

1 to 3 show the configuration of an embodiment of a signal input device according to the present invention. In FIG. 1, 10 is a probe, and this glove 10 is a probe body 11 and a rotary knob 1 for adjusting an oscilloscope (not shown).
2, a cable 13, a rotation angle sensor 14, and a probe 15. The glove body 11 has a part of the probe 15 exposed and supported at one end thereof, and a cable 13 having a connector (not shown) connected to an oscilloscope at the other end. This cable 13 includes a signal line for transmitting a signal for adjusting the oscilloscope, and a signal for transmitting a probed signal from a point to be measured to the oscilloscope. A rotation angle sensor 14 is built in the center of the probe body 11 to detect the rotation angle of the rotary knob.
A knob accommodating portion 11a is formed for accommodating the.

Next, the operation of the above embodiment will be explained. In the above embodiment, the rotary knob 12 provided on the probe body 11
When the rotation angle sensor 14 is turned, the rotation is transmitted to the rotation angle sensor 14, for example, a variable resistor, changing the resistance value, and this change is transmitted to the oscilloscope via the cable 13. The oscilloscope reads this change in resistance value and performs the corresponding function (
(adjustment of vertical position, trigger level, etc.).

Incidentally, by providing the rotation knob 12 with a lock mechanism, careless rotation can be prevented. Further, the rotation angle sensor 14 may be a rotary encoder, a variable capacitor, a variable coil, a goniometer, etc. as long as it converts rotation into an electrical signal. Note that by using an optical encoder and making the cable 13 an optical fiber, the rotation can be transmitted to the oscilloscope by an optical signal instead of an electric signal, and the oscilloscope can be adjusted. Oscilloscope gloves are highly sensitive because they handle extremely small currents, so they are susceptible to noise. For this reason, if the system uses an optical fiber, the detection signal of the rotary knob 12 can be transmitted to the oscilloscope without affecting the current to be measured by the probe because it is an optical signal.

FIGS. 4 and 5 show other embodiments.

The rotary knob 22 of the probe 200 shown in FIG. 4 is embedded in the center of the probe body 21 to such an extent that a portion of the diameter of the rotary knob 22 is exposed. The glove body 21 has a part of the probe 25 exposed and supported at one tip,
A cable 23 is provided at the other end. In this case, since the rotation knob 22 is almost embedded in the glove body 21, it is difficult to rotate it by an unnecessary amount.

Further, the probe 30 shown in FIG. 5 has a probe main body 31
The probe main body 31 has a cylindrical rotary knob 32 coaxially located at the center thereof, has a part of the probe 35 exposed and supported at one tip, and has a cable 33 at the other tip. In this case, since the rotary knob 32 is coaxial with the probe body 31, the rotary knob 32 can be operated with a fingertip regardless of the position where the probe 30 is used.
You can operate it without having to pick it up again.

Note that even if the knob can be slid in a linear direction instead of a rotary knob, the oscilloscope can be adjusted during the blobbing operation.

Effects of the Invention As described above, in the signal input device according to the present invention, an operating section for adjusting the oscilloscope is provided on the support supporting the probe, and a signal corresponding to the operation of the operating section is transmitted to the oscilloscope. This allows you to adjust the vertical position of the oscilloscope, trigger level, etc. while performing probing with your hand holding the probe.

[Brief explanation of drawings]

FIG. 1 is a front view showing the configuration of an embodiment of a signal input device according to the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a side view of FIG. 1, and FIGS. The figures are front views showing other embodiments, and FIG. 6 is a front view showing a conventional signal input device. 10, 20.30...probe, 12.22.32.
...Rotation knob, 14...Rotation angle sensor, 15...
Probe.

Claims (1)

[Claims] A signal input device characterized in that a support for supporting a probe is provided with an operation section for adjusting an oscilloscope, and a signal corresponding to the operation of the operation section is transmitted to the oscilloscope.