JPS6339653Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a programmable oscilloscope.

In this specification, a programmable oscilloscope refers to the selection of channels necessary for waveform display on the oscilloscope main body, trigger mode settings,
The settings of each setting section, such as measurement range setting, vertical axis position setting of the reference level of the displayed waveform, vertical axis sensitivity setting, horizontal axis time value setting, trigger polarity setting, etc., can be stored in advance according to the waveform to be observed. This refers to an oscilloscope that reads the stored settings corresponding to the observed waveform, sets each setting section according to the read settings, and displays the waveform.

In addition, the settings for each of the above settings can be made by setting the setting device corresponding to each setting section of the programmable oscilloscope or by setting the knobs of each setting section of the oscilloscope body that constitutes a part of the programmable oscilloscope. Then, the position of the setting device or knob is read and stored in the storage device. The setting contents corresponding to each setting section are referred to as setting data in this specification. Further, such setting operation is performed for each waveform to be observed, and the result is stored in the storage device. In this specification, all setting data for one waveform to be observed is referred to as a program step. Therefore, a plurality of program steps consisting of a plurality of setting data are stored in the storage device, and normally several dozen program steps are stored.

Further, in order to identify each program step, a number is assigned to each program step, and a number is displayed corresponding to the program step read out when it is called from the storage device.

On the other hand, although storage devices are normally backed up by batteries, there has been no particular indication of voltage drop in backup batteries.

As a result, there was a problem in that the backup battery could not be replaced at any time and the contents stored in the storage device would be lost.

The present invention has been made in view of the above, and aims to provide a programmable oscilloscope that solves the above problems.

The present invention will be explained below with reference to examples.

The figure is a block diagram showing the main parts of an embodiment of the present invention.

1 is an oscilloscope body of a programmable oscilloscope; 2 is a readable/writable storage device that is backed up by the voltage of a battery 3 and stores program steps;
It is RAM. The program steps read from the RAM 2 are input to the oscilloscope main body 1, and the corresponding setting sections are set in accordance with each setting data of the program steps.

Further, the address designation signal to the RAM 2 is decoded by the decoder 4, and the number assigned to the program step read from the RAM 2 and output to the oscilloscope body 1 is displayed on the display 5. .

On the other hand, in this embodiment, the comparator 6 for detecting that the voltage of the battery 3 has fallen below a predetermined value is connected to the battery 3.
A blinking means 7 is connected between the decoder 4 and the display 5 and is driven by the output of the comparator 6 to repeat on/off at a constant cycle.

In this embodiment configured as described above, the address signal input to the storage device 2 reads out the program step number corresponding to the address signal, and applies it to the oscilloscope body 1 to set the oscilloscope body 1. Set the section.

On the other hand, the address signal is decoded by the decoder 4, and the number corresponding to the address signal is displayed on the display 5 through the blinking means 7. In this case, when the voltage of the battery 3 is higher than the predetermined voltage, the comparator 6 does not generate an output and the blinking means 7
is in an on state, and the display 5 displays numbers. Furthermore, if the output voltage of the battery 3 falls below a predetermined value, the comparator 6 generates an output and drives the blinking means 7.

Therefore, the output of the decoder 4 is turned on and off at regular intervals by the flashing means 7, and the numbers assigned to the program steps displayed on the display 5 flash. Therefore, the flashing of the number displayed on the display 5 indicates that the voltage of the battery 3 has fallen below a predetermined value. The stored contents of the storage device 2 will not be destroyed due to voltage drop.

Further, since the display 5 with the number assigned to the selected program step is used to display the voltage drop of the battery 3, there is no need to provide a new display means.

As explained above, according to the present invention, it is possible to display the voltage drop of the backup battery in the storage device in the programmable oscilloscope, and it is possible to avoid missing the time to replace the backup battery.

Further, there is no need to provide a new independent display means to display the voltage drop of the backup battery.

[Brief explanation of the drawing]

The figure is a block diagram for explaining the configuration of an embodiment of the present invention. 1... Oscilloscope body, 2... RAM,
3...Battery for backup, 4...Decoder,
5... Display device, 6... Comparator, 7... Flashing means.

Claims (1)

[Scope of utility model registration request] In a programmable oscilloscope, a symbol is assigned to each program step to identify the program step, and the corresponding symbol is displayed on the display to indicate the selected program step. detection means for detecting that the output voltage of the backup battery has fallen below a predetermined value;
A programmable oscilloscope comprising: a blinking means driven by the output of the detection means to blink the display on the display.