JPS63292073A - Transmission-characteristic measuring instrument - Google Patents
Transmission-characteristic measuring instrumentInfo
- Publication number
- JPS63292073A JPS63292073A JP13016487A JP13016487A JPS63292073A JP S63292073 A JPS63292073 A JP S63292073A JP 13016487 A JP13016487 A JP 13016487A JP 13016487 A JP13016487 A JP 13016487A JP S63292073 A JPS63292073 A JP S63292073A
- Authority
- JP
- Japan
- Prior art keywords
- digital
- output
- signal
- analog
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000005259 measurement Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は測定器に関し、特にアナログ入出力端子とデジ
タル入出力端子を持つ伝送特性測定器に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a measuring instrument, and particularly to a transmission characteristic measuring instrument having analog input/output terminals and digital input/output terminals.
従来、この種の測定器は第３図に示すようにアナログ入
出力端子１および２とデジタル入出力端子３および４を
持ち第１にアナログ入出力を持つ被′″測定物に対して
はアナログとアナログ、第２にデジタル入出力を持つ被
測定物に対してはデジタルとデジタル、第３にアナログ
入力とデジタル出力又はデジタル入力とアナログ出力を
持つ被測定物に対してはアナログとデジタルの測定が可
能であった。Conventionally, this type of measuring instrument has analog input/output terminals 1 and 2 and digital input/output terminals 3 and 4, as shown in Figure 3. and analog, secondly, digital and digital for a device under test that has digital input and output, and thirdly, analog and digital measurement for a device under test that has analog input and digital output or digital input and analog output. was possible.
デジタル交換機では加入者からのアナログ信号をデジタ
ル信号に符号化し時分割交換を行った後デジタル信号を
アナログ信号に復号化し加入者へ伝えている。近年符号
化及び復号化は加入者インタフェイス回路でおこなって
いる。従って加入者インタフェイス回路の測定を行う場
合にはアナログ入力デジタル出力、デジ′タル入力アナ
ログ出力と共にアナログ入力アナログ出力での測定が必
要となっている。しかしながら上述した従来の測定器で
は、デジタル入力への入力信号をデジタル出力へ出力す
ることができないためこの種の測定は不可能であった。A digital exchange encodes an analog signal from a subscriber into a digital signal, performs time-division switching, and then decodes the digital signal into an analog signal and transmits it to the subscriber. In recent years, encoding and decoding are performed in subscriber interface circuits. Therefore, when measuring subscriber interface circuits, it is necessary to measure analog input to digital output, digital input to analog output, and analog input to analog output. However, with the above-mentioned conventional measuring instruments, this type of measurement is not possible because the input signal to the digital input cannot be output to the digital output.
すなわち、実際に使用される状態での伝送特性の測定が
出来なかっな。In other words, it is not possible to measure the transmission characteristics under conditions of actual use.
本発明の伝送特性測定器はデジタル入力とデジタル出力
間に時分割スイッチを有している。The transmission characteristic measuring instrument of the present invention has a time division switch between the digital input and the digital output.
次に、本発明について図面を参照して説明する。第１図
は本発明の伝送特性測定装置の一実施例を示すブロック
図である。１００は伝送測定装置、１はアナログ出力端
子、２はアナログ入力端子、３はデジタル出力端子、４
はデジタル入力端子、５はデジタル交換機と同様に時分
割交換に相当する機能を持つ時分割スイッチ、６はアナ
ログ発振器、７はアナログ測定器、８はデジタル発振器
、９はデジタル測定器、１ｏはデジタル出方端子３をデ
ジタル発振器８と時分割スイッチ５とに切替接続し、デ
ジタル入力端子４をデジタル測定器９と時分割スイッチ
５とに切替接続するためのスイッチである。Next, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the transmission characteristic measuring device of the present invention. 100 is a transmission measurement device, 1 is an analog output terminal, 2 is an analog input terminal, 3 is a digital output terminal, 4
is a digital input terminal, 5 is a time division switch that has a function equivalent to time division exchange like a digital exchange, 6 is an analog oscillator, 7 is an analog measuring device, 8 is a digital oscillator, 9 is a digital measuring device, 1o is a digital This is a switch for selectively connecting the output terminal 3 to the digital oscillator 8 and the time division switch 5, and for selectively connecting the digital input terminal 4 to the digital measuring instrument 9 and the time division switch 5.
第２図は本発明の伝送測定装置を用いたー測定例を示す
接続図である。図はスイッチ１０により時分割モードに
接続されていることを示している。１１はデジタル同期
用のタロツク出力、１２はアナログ入力デジタル出力を
持つ被測定物、１３はデジタル入力アナログ出力を持つ
被測定物である。アナログ出力１から出力される測定用
信号は被測定物１２のアナログ入力に入力されデジタル
信号となって出力される。この信号はデジタル人力４に
入り時分割スイッチ５の任意のチャネルを経て、任意の
チャネルへ出力されデジタル出力３から被測定物１３の
デジタル入力に入りアナログに変換されアナログ信号と
して出力されアナログ人力２に入力されこの信号を測定
器７で測定する。なお、スイッチ１０により、前記の時
分割モードから通常モードへ接続することにより従来ど
おりの測定を行なうことも可能である。FIG. 2 is a connection diagram showing an example of measurement using the transmission measuring device of the present invention. The figure shows that the switch 10 is connected to the time division mode. 11 is a tarok output for digital synchronization, 12 is an object to be measured having analog input and digital output, and 13 is an object to be measured having digital input and analog output. The measurement signal output from the analog output 1 is input to the analog input of the object to be measured 12 and output as a digital signal. This signal enters the digital human power 4, passes through any channel of the time division switch 5, is output to any channel, enters the digital input of the device under test 13 from the digital output 3, is converted to analog, is output as an analog signal, and is output as an analog signal to the analog human power 2. This signal is input to the measuring device 7 and measured by the measuring device 7. Note that it is also possible to carry out conventional measurements by switching from the time division mode to the normal mode using the switch 10.
以上説明したように本発明は、伝送測定器のデジタル入
力とデジタル出力間に時分割スイッチを配置することに
より、アナログ入力デジタル出力およびデジタル入力ア
ナログ出力を持つ被測定物をアナログ入力アナログ出力
として測定できることから、実際に交換機に接続された
状態と等価な伝送特性を測定できる効果がある。As explained above, the present invention measures an object under test that has analog input and digital output and digital input and analog output as analog input and analog output by arranging a time division switch between the digital input and digital output of a transmission measuring instrument. This has the effect of making it possible to measure transmission characteristics equivalent to those actually connected to an exchange.
第１図は本発明の伝送特性測定装置の一実施例を示すブ
ロック図、第２図は本発明の測定器を用いた測定例を示
す接続図である。第３図は従来の測定器のブロック図で
ある。
１・・・アナログ出力端子、２・・・アナログ入力端子
、３・・・デジタル出力端子、４・・・デジタル端子、
５・・・時分割スイッチ、６・・・アナログ発振器、７
・・・アナログ測定器、８・・・デジタル発振器、９・
・・デジタル測定器、１０・・・切替スイッチ、１１・
・・同期クロック、１２．１３・・・被測定物、１００
・・・伝送特性測定器。
枢特柱測尼をFIG. 1 is a block diagram showing an embodiment of the transmission characteristic measuring device of the present invention, and FIG. 2 is a connection diagram showing an example of measurement using the measuring instrument of the present invention. FIG. 3 is a block diagram of a conventional measuring instrument. 1... Analog output terminal, 2... Analog input terminal, 3... Digital output terminal, 4... Digital terminal,
5... Time division switch, 6... Analog oscillator, 7
...Analog measuring instrument, 8...Digital oscillator, 9.
...Digital measuring instrument, 10...Selector switch, 11.
...Synchronized clock, 12.13...Object to be measured, 100
...Transmission characteristic measuring instrument. The central pillar
Claims (1)
特性測定器において、デジタル入力と出力間に時分割ス
イッチを持ちデジタル入力の任意のチャネルの信号をデ
ジタル出力の任意のチャネルに出力することのできる時
分割モードを持つことを特徴とする伝送特性測定器。When a transmission characteristic measuring instrument with analog input and output and digital input and output has a time division switch between the digital input and output, and the signal from any channel of the digital input can be output to any channel of the digital output. A transmission characteristic measuring instrument characterized by having a split mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13016487A JPS63292073A (en) | 1987-05-26 | 1987-05-26 | Transmission-characteristic measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13016487A JPS63292073A (en) | 1987-05-26 | 1987-05-26 | Transmission-characteristic measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63292073A true JPS63292073A (en) | 1988-11-29 |
Family
ID=15027540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13016487A Pending JPS63292073A (en) | 1987-05-26 | 1987-05-26 | Transmission-characteristic measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63292073A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0448851A (en) * | 1990-06-18 | 1992-02-18 | Oki Electric Ind Co Ltd | Test system for voice digitizer |
-
1987
- 1987-05-26 JP JP13016487A patent/JPS63292073A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0448851A (en) * | 1990-06-18 | 1992-02-18 | Oki Electric Ind Co Ltd | Test system for voice digitizer |
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