JPH0827320B2 - Signal generation controller - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal generation control device used as a signal source for measuring characteristics of electronic equipment such as FM stereo broadcasting radio.

2. Description of the Related Art Conventionally, this type of signal generation control device has been configured so that the modulation frequency, deviation, etc. can be set freely, and it is equipped with multiple memories that can store various setting states in independent addresses. Therefore, by setting the signal generator to a desired state and storing the set state in an arbitrary address of the memory, it is possible to reproduce even complicated settings by a simple operation.

FIG. 5 shows the configuration of a conventional signal generator. In FIG. 5, reference numeral 2 is a signal modulator, which is controlled by the controller 3 according to the state set by the operation unit 14. A memory 4 can store a plurality of setting states in the memory of independent addresses. A necessary state can be stored in the memory 4 in advance by the operation unit 14, and the required state can be reproduced by a simple operation by calling the memory from the operation unit 14. Further, when a control signal is applied to the memory control signal input unit 5, the memory address is sequentially increased and decreased to call the setting state, which enables remote operation.

Further, the GP-iB interface 6 can be used for remote control. In this case, the signal modulator 2 is controlled by the controller 3 according to the instruction from the controller,
It is also possible to store and call the above memory.

As an example of omitting the complicated setting operation and shortening the measurement time by using the conventional signal generator as described above,
The measurement system shown is possible. In FIG. 2, the output signal of the signal generator 1 is applied to the device under test 9, and the output signal of the device under test 9 is measured by the measuring device 10. Here, if the measuring device has the memory 4 and the memory control input terminal 8 of FIG. 5 as in the case of the above-mentioned signal generator and remote control by calling the memory is possible, the remote control switch shown in FIG. By simultaneously applying a memory control signal from 11 to the signal generating device 1 and the measuring device 10, the signal generating device 1 and the measuring device 10 can be remotely operated to a required setting state. FIG. 7 shows a measurement system that is capable of measuring a plurality of DUTs by developing this measurement system. In FIG.
12 is an input signal switching device, 13 is an output signal switching device, which selects any one of a plurality of DUTs, adds the output signal of the signal generator to it, and outputs the selected DUT. Measure the signal. Here, if the measuring device 9, the input signal switching device 12, and the output signal switching device 13 have the same memory function as the above-mentioned signal generating device 1 and remote control is possible, each device is controlled by the remote control switch 11. Can be set to a required state and a plurality of DUTs can be sequentially measured.

In FIG. 7, the signal generator 1, the input signal switching device
12, the output signal switching device 13, the measuring device 10, each GP-
If an iB interface is provided, each device can be remotely controlled by GP-iB using the system controller instead of the remote control switch 11. This is shown in FIG. In FIG. 8, each device is set to a required state by the controller 15, and it is possible to sequentially measure a plurality of objects to be measured as in the measurement system shown in FIG.

FIG. 9 shows the configuration of a signal switching device having the above memory function and GP-iB interface. In FIG.
A signal switching unit 23 is controlled by the control unit 22 according to the state set by the operation unit 22. Similar to the memory function of the signal generator, the setting state can be stored in the memory 20, the control signal can be added to the memory control signal input terminal 24 to sequentially call the memory, and the remote control can be performed. . Furthermore, since it has a GP-iB interface, it can also be remotely controlled using a controller. The signal switching unit 23 includes a relay driver 28 and a relay 29, and the control unit 22 applies a signal for controlling a relay that switches signals to the relay driver 28. In the input signal switching device 12, the output signal of the signal generator is applied to the signal input / output terminal 26, and the DUT is connected to each of the signal input / output terminals 25 so that the signal can be applied to any one of them. There is an output signal switching device 13 in which an output signal from the object to be measured is added to the signal input / output terminal indicated by 25 and the measuring device is connected to the signal input / output terminal 26.

As shown in the above two examples, since the signal switching device has the memory function or the GP-iB interface, it is possible to sequentially measure a plurality of DUTs by remote control using the conventional signal generator.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the conventional measurement system by remote control of the memory shown in FIG. 7, all the input signal switching device, the output signal switching device, and the measuring device are the signals such as the stereo modulator. There is a problem that the measurement system cannot be configured unless it has the same memory function as the generator. Further, in the measurement system for remote control by the controller using GP-iB shown in FIG. 8, there is a problem that the measurement system cannot be configured unless all the devices are equipped with the GP-iB interface. In addition to the input signal switching device shown in FIGS. 7 and 8, the output signal switching device 13 is made as a jig and does not have the memory function or GP-iB interface as in the stereo modulation device. Things are common. Therefore, there is a problem that the measurement system as shown in FIGS. 7 and 8 cannot be easily constructed.

The present invention solves such a conventional problem, and can easily control an external device such as an input signal switching device or an output signal switching device that does not have the above memory function or GP-iB interface. An object of the present invention is to provide an excellent signal generation control device that can be used.

Means for Solving the Problems In order to achieve the above object, the present invention provides a signal generator with an external input / output signal control unit 16 and an external signal input / output terminal 17 to output a control signal to an external device or It is designed to allow signals to be input from devices. The external input / output signal controller 16 can set the input mode and the output mode,
It is possible to simultaneously set each input / output mode to each external input / output terminal, such as a certain one as an output and a certain one as an input. The signal output from the external signal input / output terminal 17 is controlled by the control unit 3 according to a command from the controller using the operation unit 14 or the GP-iB interface.
The external input / output signal control unit 17 is controlled by the and the output signal is set. The output signal settings can be stored in memory and can be set by calling the memory. The input signal to the external signal input / output terminal 17 can be sent to the controller using the GP-iB interface. In addition, 9 input / output terminals are set to input mode, one of them is used as STB signal, and the remaining 8
Use the book as an 8-bit data bus, and add BCD
By inputting the address of the memory with a code and then inputting the STB signal, the direct calling of the memory can be remotely controlled.

Action The present invention has the following actions due to the above-mentioned configuration. That is, the signal generator is set to a desired state from the operation unit in advance, at the same time, the output signal to be output from the external signal input / output terminal is also set and stored in the memory, and the memory is called up to easily perform the signal generator The setting of can reproduce the output signal to the external device.
The output signal can also be set by a command from the controller using the GP-iB interface.
Here, the input signal switching device 12 shown in FIG. 7 and FIG.
Even if the output signal switching device 13 and the output signal switching device 13 do not have a memory function or a GP-iB interface, as long as they have an input terminal for receiving the output signal from the signal generating device, the input signal can be obtained by simply operating the signal generating device remotely. The switching device and the output signal switching device can be controlled.

In addition, the controller can read the input signal to the external signal input / output terminal specified for the input mode by using the GP-iB interface, which allows the controller to monitor the external device that does not have the GP-iB interface. You can In addition, the ability to directly call the address of the memory, in addition to increasing or decreasing the conventional memory address, it has become possible to call any address by remote control.

Practical Example FIG. 1 is a block diagram of a signal generation controller according to an embodiment of the present invention, and FIG. 2 is a measurement example according to the same embodiment. In FIGS. 1 and 2, reference numeral 1 is a signal generator such as a stereo modulator, and an external signal input / output terminal 17 thereof has an input terminal for an external signal and can switch signals by the external signal. Switching device 18 and output signal switching device
Connected to 19. The output signal from the signal generator 1 is supplied to the input signal switching device 18 and also to one of the plurality of DUTs 9 selected by the input signal switching device 18, and the output signal thereof is output to the output signal switching device 19. Select by measuring device
In addition to 10, multiple objects to be measured are sequentially measured.

Next, the operation of the above embodiment will be described. In the above embodiment, it is assumed that the measuring device 10 has a memory function similar to that of the stereo signal device, and the state necessary for the measurement is stored in the memory in advance.
Assuming that the device settings and output signals to external devices are stored in advance in the memory of, the address of the signal generator 1 and the memory of the measuring device 10 can be changed by the remote control switch 11 that remotely operates the memory. It is possible to easily realize the required setting state by sequentially calling. On the other hand, since the memory of the signal generator 1 also stores the output signal for controlling the input signal switching device 18 and the output signal switching device 19 at the same time, the input signal switching device 18 is called by calling the memory of the signal generating device 1. , The output signal switching device 19 is controlled and set to the required state,
One of the plurality of DUTs can be selected.

As described above, according to the above-described embodiment, there is an advantage that the input signal switching device 18 and the output signal switching device 19 can be simultaneously controlled by remotely operating the memory of the signal generating device 1 by the remote control switch 11. Further, according to the above-described embodiment, the input signal switching device 18 and the output signal switching device 19 have simple input terminals even if they do not have a complicated memory function as the signal generating device 1 has, but the signal generating device 1 has a simple input terminal. Since the remote control can be performed by using, the input signal switching device 18 and the output signal switching device 19 are simpler than the input signal switching device 12 having the memory function and the output signal switching device 13 having the memory function in FIG. Therefore, the same effect as that of the measuring system shown in FIG. 7 can be easily obtained.

In FIG. 2, the remote control switch 11 is used to remotely operate the signal generator and the measuring device, but FIG. 3 shows an embodiment in which the controller 15 is remotely controlled using the GP-iB interface. . Third
In the figure, an input signal switching device 18 and an output signal switching device 19
2 is the same as that in FIG. 2, in which the controller 15 controls the signal generator and the measuring device to sequentially measure a plurality of DUTs. The input signal switching device 18 and the output signal switching device 19 do not have a GP-iB interface,
Since the controller of the signal generator 1 controls the setting state and the output signal to the external device, the input signal switching device 18 and the output signal switching device 19 can be controlled by the controller through the stereo modulator.

As described above, according to the above-described embodiment, by remotely controlling the signal generating device by the controller using the GP-iB interface, it is possible to control the signal switching device without the GP-iB interface by the controller. Have. Therefore, the signal switching device is simpler than the input signal switching device 12 and the output signal switching device 13 having the GP-iB interface shown in FIG.
An effect equivalent to that of the measurement system shown in FIG. 8 can be easily obtained.

From the above two embodiments, the signal switching device becomes simple as shown in FIG. In the signal switching device shown in FIG. 9, the signal for controlling the relay is added to the relay driver from the control unit, but in the signal switching device shown in FIG. 4, the signal for controlling the relay is given from the signal generator. .
Therefore, a signal switching device can be easily made,
There is an effect that a measurement system for sequentially measuring a plurality of DUTs can be easily constructed.

EFFECTS OF THE INVENTION As is apparent from the above embodiments of the present invention, (1) an output signal to an external device can be stored in a memory, and a required output signal can be obtained by calling the memory. Since the external device is provided with the control signal input terminal, the external device can be controlled by calling the memory of the signal generator.

(2) Since the output signal of the external device can be controlled by the controller using the GP-iB interface, the external device can be controlled by the controller through the signal generator by providing the control signal input terminal to the external device. .

(3) Since the output signal of the external device can be input, the controller can monitor the external device through the signal generator using the GP-iB interface.

 It has the effect.

[Brief description of drawings]

1 is a block diagram of a signal generation controller according to an embodiment of the present invention, FIG. 2 is a block diagram of a measurement example according to the present embodiment, and FIG. 3 is a block diagram of a second measurement example according to the present embodiment. FIG. 4 is a block diagram of a signal switching device according to the present embodiment, FIG. 5 is a block diagram of a conventional example, FIG. 6 is a block diagram of a measurement example according to the conventional example, and FIG. 7 is a measurement example of remote operation according to the conventional example. FIG. 8 is a block diagram of a measurement example of a GP-iB interface according to a conventional example, and FIG. 9 is a block diagram of a conventional signal switching device. 1 ... Signal generator, 2 ... Signal modulator, 3 ... Control unit, 4 ... Memory, 5 ... Memory control signal input unit,
6 ... GP-iB interface, 7 ... output terminal, 8 ...
… Memory control signal input terminal, 16 …… External input / output signal controller, 17 …… External signal input / output terminal.

Claims (1)

[Claims] 1. An external input / output signal control unit for setting a signal input from a DUT designated by a switching signal to an external device and a signal generation state output from the external device among a plurality of DUTs, and An external signal input / output terminal for outputting a signal from the external input / output signal control unit and inputting a signal from the external device, and a signal generation state of the external device and the switching signal set by the operation unit and stored in the memory In addition, it is equipped with a signal generator that recalls the data in this memory by a remote control signal, outputs a control signal to the external device, and outputs the signal to the external signal input / output terminal in a signal generation state specified together. Signal generation control device.