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這是Parallax推出的USB介面示波器(Oscilloscope), 目前可以單獨買(產品編號 : U28014),
也可以買入完整的示波器教學套件 (產品編號 : U28119)。在學習套件
部分,
增加一本144頁的"訊號解析"學生手冊, 也附上電子零件, A/D converter, 伺服機等實驗零件。
這個裝置可以透過PC的USB port連接, 直接量測並監看波形; 體積小攜帶方便, 不須外接電源(USB給電源即可),
外額為經過表面處理的金屬蓋, 美觀又安全。
所有的示波器操作都是透過point-to-click (點擊示)的PC視窗, 這套程式軟體提供動態的波形監控或是波形擷取功能。強大的功能包括,
trigger setting (觸發設定), 波形量測(MIN, MAX, 頻率與週期), 提供客制化的設定儲存, BMP檔案螢幕抓取;
還有3種游標的波形擷取特殊功能, 如zoom(螢幕縮放), 檢視與精確檢視波形。
"訊號解析"手冊的內容大綱 :
The Understanding Signals Tutorial這本書是對於Parallax USB
Oscilloscope產品的豐富精闢的手冊, 裡面的每個章節, 都是應用BASIC Stamp來製作的電路與範例, 書中也談到, 如何操作示波器,
探頭(Probe)的放置等等。
重要章節如下
-
Analog
inputs from photoresistors and A/D converters
-
RC-time in
resistor-capacitor networks
-
Asynchronous serial communication between the PC and a BASIC Stamp
module
-
Synchronous serial communication between a BASIC Stamp and ADC0831 A/D
converter
-
Single and
dual sine waves
-
Servo
pulse signals over an entire range of motion
-
Pulse
width modulation with infrared
-
Decoding
of handheld infrared remote control signals
-
Voltage
amplification and inversion with DC offset with an op-amp
-
All
electronic components needed are included in the Understanding Signals
Parts and Text kit (see the
Components Listing here).
-
BASIC
Stamp 2 source code for the experiments in the book is available for
free download below.
功能列表 :
-
2 Channels
-
單通道取樣頻率 :
1 Ms/s Maximum Sample Rate with One Channel
-
雙通道取樣頻率 :
500 Ks/s Sample Rate with Two Channels
-
輸入電壓 : 20
Vpp Maximum Input for Channel 1 and Channel 2
-
頻寬: 200
kHz Bandwidth
-
解析度 :
8-Bit Vertical Resolution
-
輸入阻抗值 : 1
M Ohm Input Impedance
-
上緣或下緣電壓 :
Trigger on Rising or Falling Edge at any Voltage
-
變數觸發 :
Variable Trigger voltage on Channels 1 and 2
-
水平觸發 :
Horizontal Trigger Position Settings at 10%, 50%, and 90%
-
自動與正常模式 :
Auto and Normal Trigger Modes
-
探頭 : 3
probes
-
USB 1.1
Support (no additional power supply required!)
-
尺寸 : Size:
5 x 2.25 x 1.5 (in.); 12.7 x 5.7 x 3.8 (cm)
-
重量 :
Weight: 8 oz; 227 gm
-
軟體(免費) :
Parallax Digital Oscilloscope Software CD-ROM (download and evaluate for
free below)
-
額外好處 :
隨時上網免費軟體升級
系統需求
:
資料下載 :
FTDI USB VCP Drivers
(.zip)
BOE USB Install for WinXP (.pdf)
BOE USB Install for Win 2k(.pdf)
BOE USB Install for Win ME (.pdf)
BOE USB Install for Win 98 (.pdf)
Oscilloscope Software and Installation Instructions page
Understanding Signals Text (.pdf) / 解析訊號 (Signal) ... 相當棒 !
Understanding Signals Source Code (.zip)
參考資源 :
Components Listing
Screen shot image (.jpg)
Consider
the Understanding Signals Parts Kit and Text (includes scope)
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