JPS6355028B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for partially writing program steps in a programmable oscilloscope.

In this specification, a programmable oscilloscope refers to the selection of channels necessary for waveform display by the oscilloscope itself, the setting of trigger modes,
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 out the settings that have been stored in correspondence with the observed waveform, and sets each setting section according to the read settings to display broken shapes.

In addition, to set each of the above settings, set the setting device corresponding to each setting section on the programmable oscilloscope or the knob of each setting section on the oscilloscope body of the programmable oscilloscope, and then use the setting device or knob. Read the position of and store it 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.

However, in conventional programmable oscilloscopes, as mentioned above, one program step is handled as one unit, and although it is possible to write and read all the setting data that makes up one program step, There was a drawback that only individual setting data could not be changed.

Therefore, if you want to change only arbitrary setting data in a program step, there is no other way than to write one applicable program step as a unit, so if you want to change some setting data, you do not need to change it. The setting data and the setting data after the setting data to be changed had to be set again and written as a unit to the storage device.

For this reason, changing any setting data during a program step is extremely troublesome.

The present invention has been made in view of the above, and an object of the present invention is to provide a method for partially writing a program step in a programmable oscilloscope by which any setting data in the program step can be easily changed. .

The method of the present invention will be explained below using examples.

The figure is a block diagram illustrating the configuration of an embodiment to which the method of the present invention is applied.

In this embodiment, a case where one program step consists of eight setting data will be explained as an example.

In the figure, reference numeral 1 denotes an input port having ports 1a, . 2 is port 1a,...,1
This is an output port having ports 2a, . . . , 2h corresponding to ports 2a, .

3 is a storage device in which a plurality of program steps are stored. 4 is a write/write where the contents of each bit are set by switches etc. on the operation console.
This is a read switching register and has the same number of bits as the number of input ports 1. S ₀ to _{S 7} and S ₀ ' to S ₇ ' are changeover switches that are changed over depending on the value of each bit of the write/readout changeover register 4, and switches with the same subscript are changed over in conjunction with each other. For example, the changeover switches _S0 to _S7 and _S0 ' to _S7 ' switch to the contact a side when the corresponding bit content of the write/read register 4 is "1", and switch to the contact b side when it is "0". Switch to.

The operation will be explained assuming that it is desired to change only the settings of the setting section corresponding to port 2h during the program step.

In this case, write/read register 4
sets its bit pattern to “00000001”.

Therefore, only the changeover switches S ₀ and S ₀ ' have contact a.
It is switched to the side, and the changeover switch S ₁ ~ S ₇ and
S ₀ ′ to S ₇ ′ are switched to the contact B side.

In this state, each port 1a, . . . , 1g of the input port 1 is cut off from the storage device 3, and each port 2a, .
..., 2g are connected, and the port 1h of the input port 1 is connected to the output port 2h and connected to the storage device.

Therefore, addresses are sequentially specified in the storage device 3, and ports 2a, 2b of the output port 2 of the program step stored in the storage device 3 are...
. . , 2h, the settings data previously stored in the storage device 3 are output from the ports 2a, . . . , 2g of the output port 2. Since this setting data has been set in advance, there is no change in the settings of each setting section of the corresponding programmable oscilloscope. Note that the setting data corresponding to port 2h output from the storage device 3 is read from the storage device 3, but since the changeover switches S ₀ and S ₀ ' are switched to the contact a side, the setting data is not output to the port 2h. First, the setting data given to port 1h of input port 1 is transferred to port 2h and output from port 2h, and the setting data of the programmable oscilloscope corresponding to port 2h is given to port 1h. It will be set by the setting data. On the other hand, since port 1h is connected to storage device 3,
When a write signal is given to the storage device 3 when selecting the address corresponding to port 2h, port 1
The setting data input to h is written to the storage device 3. In this case port 1
The setting data given to h is the address specified for port 2h. Therefore, by applying new setting data to the port 1h, the setting of the setting unit corresponding to the port 2h can be changed, and the new setting data can be stored in the storage device 3 at the corresponding address.

Therefore, only arbitrary setting data during a program step can be changed and stored.

Note that the same applies to setting sections other than the setting section corresponding to port 2h.

In the above description, the program step is made up of eight pieces of setting data, but it may be made up of any other number of setting data.

In this case, the corresponding setting section is set with setting data that does not need to be changed, and by changing only the setting data to be changed to various bit patterns and observing the displayed waveform, select the setting data that gives the optimal display. , the selected optimal setting data can be stored by applying a write signal WE at the end of the selection.

On the other hand, by setting the contents of each bit of the write/read register 4 to "0", the contents of each address 3a to 3h of the storage device 3 are transferred to the corresponding port 2a to 2h of the output port 2, respectively. Each setting section of the oscilloscope main body is set by the respective setting data stored in advance, and functions as a programmable oscilloscope.

Conversely, by setting the contents of each bit of the write/read register 4 to "1", each port of the input port 1 communicates with each corresponding port of the output port 2 through the switches _S0 to _S7. In this case, each setting section of the oscilloscope will be set according to the setting data given to each port of input port 1. In this case, the programmable oscilloscope will be connected to the oscilloscope. Regardless of the setting data of the program steps in which the main body is substantially separated and each setting section is stored in the storage device 3, the oscilloscope can be operated in the same manner as a conventional oscilloscope. Furthermore, in this case, if a write signal is not applied to the storage device 3, the contents of the storage device 3 will not change, and the oscilloscope can be operated as a programmable oscilloscope using previously stored program steps. It becomes possible.

As explained above, according to the present invention, only arbitrary setting data during a program step can be changed and written to the storage device, so that it is easy to change to various measurement conditions or measurement states in a programmable oscilloscope. There is no need to rewrite all setting data for one program step, including setting data that does not require changes.
Improves operability.

Further, by setting the write/read register, it is possible to set the setting section of the oscilloscope body in the same way as setting by manual operation, regardless of the program step set in advance in the programmable oscilloscope.

[Brief explanation of drawings]

The figure is a block diagram illustrating the configuration of an embodiment to which the method of the present invention is applied. 1...Input port, 2...Output port, 3
...Storage device, 4...Write/read switching register, S0 to _S7 and _{S0 '} to _S7 '...Switch switch.

Claims (1)

[Claims] 1 In a programmable oscilloscope,
A register with the number of bits corresponding to the number of setting data that constitutes a program step is provided to guide the setting data applied to the input port to the storage device, and also to connect the programmable oscilloscope to the input port. selectively switching, depending on the contents of each bit of the register, whether to lead the setting data read from the storage device to an output port connected to the setting section of the storage device, or to lead the setting data read from the storage device to the output port; A method for partially writing a program step in a programmable oscilloscope, characterized in that only setting data guided to the storage device is stored in the storage device.