Virginia Diodes 【VDI】
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VDI社製シンセサイザー、周波数カウンター
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- RF、ミリ波、テラヘルツ
- VDI社製シンセサイザー、周波数カウンター
Virginia Diodes 【VDI】
Virginia Diodes (VDI)社のシンセサイザーはテラヘルツアプリケーションを対象とした機能を備えたVDIソースおよびレシーバー用に設計されました。
8-20 GHz VDI Synthesizer
- 8-20 GHz Synthesizer
- Fast Switching Speed
- Frequency Sweeping Capability
- Excellent Phase Noise Characteristics
- Software based USB Control
- Click on Synthesizer tab for specifications
Economy Synthesizer
- >2 GHz Bandwidth Synthesizer up to 16 GHz
- 3 ms Switching Speed
- 12 Hz Step Size
- Good Phase Noise Characteristics
- Software based USB Control
- Click on Economy Synthesizer tab for specifications
Frequency Counter
- 0.5-20 GHz Frequency Counter
- Compact
- Variable Measurement Speed
- Software control through USB port
- No wall plug or external power supply needed
- Click on Frequency Counter tab for specifications
仕様
8-20 GHz VDI Synthesizer
8-20 GHz VDI Frequency Synthesizer Data Sheet
| Description | Data |
|---|---|
| Bandwidth: | 8-20 GHz, SMA |
| Output power: | 16 dBm minimum |
| Resolution: | <20 Hz |
| Harmonics: | -12 dBc |
| Non-harmonic spurs: | <-50 dBc in CW mode |
| Settling time: | 100 kHz step settles to <20 Hz within 50 us |
| Sweep rate: |
>25 MHz deviation at 14 ms/1 GHz, <25 MHz at 3us/1 MHz. Faster rates are possible with frequency error. +/-25 MHz peak deviation at 3 kHz rate. Smaller deviations are proportionally faster up to ~100 kHz maximum rate. Faster rates are possible with frequency error. |
| Phase step size: | < 0.5 degrees |
| CW Switching time: | < 800 uS communication time (incremental) + settling time + sweep time (USB commands can be repeated every 1 ms.) |
| Frequency stability: | limited by reference oscillator |
| Frequency repeatability: | limited by reference oscillator |
| Absolute frequency accuracy: | <10 Hz + reference oscillator error |
| Reference input: | 10 MHz, 10 dBm, SMA, option for 100 MHz |
| Sweep trigger output: | 0-3.3 V digital signal, BNC (transitions high at the beginning of the sweep up and low at the beginning of the sweep down.) |
| Interface: | USB control by ASCII text commands to FTDI chip. Open source code provided for Labview 7.0 |
| Size: | L x W x H: ~6.125 x 4.375 x 1.5" excluding connectors, reference oscillator, fan, and external DC power supply |
| DC Power: | +15 V ~3 A, -15 V ~80 mA, Separate DC power supply included with AC wall plug, consumes ~50 W |
| Options | 1. Tracking Synthesizer (internal or external offset options available) 2. Phase continuous swept FM capability (see page 3 of the Synthesizer Product Datasheet for more information) |
Economy Synthesizer
VDI Economy Frequency Synthesizer Data Sheet
| Description | Data |
|---|---|
| Bandwidth: | >2 GHz up to 16 GHz |
| Output power: | Optimally configured for the VDI multiplier chain |
| Resolution: | 12 Hz |
| Harmonics: | <-15 dBc |
| Non-harmonic spurs: | <-45 dBc |
| CW Switching time: | 3 ms |
| Frequency stability: | limited by reference oscillator |
| Frequency repeatability: | limited by reference oscillator |
| Absolute frequency accuracy: | <3 Hz + reference oscillator error |
| Reference input: | 10 MHz, 10 dBm, SMA |
| Typical phase noise | See graph below |
| Interface: | USB control by ASCII text commands to FTDI chip. Open source code provided for Labview 7.0 |
| Size: | L x W x H: ~3.5 x 2.875 x 1.25" excluding connectors |
| DC Power: | +15 V ~3 A, -5 V ~30 mA |
FREQUENCY COUNTER
VDI周波数カウンターはVDI周波数エクステンダーを駆動する基本周波数を測定するために設計されました。不要な機能、余分なサイズとコストを削減するために設計は合理化されています。 入力パワーが0〜10 dBmの場合、周波数範囲は0.5〜20 GHzです。 ディスプレイの解像度は7桁ですが32ビットの解像度はPCに接続されたUSBケーブルを介して読み取ることができます。測定時間は100 ms以内の4 kHzなど、適度な相対精度で高速測定を行うように設定できます。 ユニットは小型（3.75 x 2.5 x 1.6インチ）で、電源または壁のプラグを必要とせずにコンピューターに接続されたUSBケーブルを介して電力を供給されます。ほとんどのプログラミング言語で使用できるソフトウェアドライバーが提供され、ユーザーインターフェースのオープンソースコードもLabview 7.0で提供されます。
VDI Frequency Counter Data Sheet
| Description | Data |
|---|---|
| Bandwidth: | 0.5-20 GHz, SMA |
| Input power: | 0-10 dBm |
| Resolution: | 7 digits display, 32 bits through USB |
| Absolute accuracy: | <30 kHz |
| Relative accuracy: | 384/(measurement time (s)) (Hz) + internal clock drift Ex. 100 ms gives 3.96 kHz measurement |
| Measurement time: | Selectable from 0.4 ms to 26 s, read through USB every 1 ms |
| Display Calibration Factor: | 7 significant digits |
| Input impedance | 50 ohm |
| Interface: | USB control with software for Windows XP. Labview runtime engine 7.0 will be installed. Dynamic link libraries supplied for use with programming languages. Open source code provided for Labview 7.0. |
| Size: | L x W x H, 3.75 x 2.5 x 1.6" |
| Current consumption: | 200 mA |