OVERVIEW
Description
VDI's synthesizers were designed specifically for VDI sources and receivers with features targeted for Terahertz applications. VDI frequency counters were designed specifically to measure the fundamental frequencies driving VDI frequency extenders.
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8-20 GHz VDI Synthesizer
Features:
- 8-20 GHz Synthesizer
- Fast Switching Speed
- Frequency Sweeping Capability
- Excellent Phase Noise Characteristics
- Software based USB Control
- Click on Synthesizer tab for specifications
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Economy Synthesizer
Features:
- >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
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Frequency Counter
Features:
- 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
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Contact us today for a quote, additional information or to discuss specifications.
8-20 GHz VDI SYNTHESIZER
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| 8-20 GHz VDI Frequency Synthesizer Data Sheet |
| 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.
16-bit control of step time, 4 ns minimum.
+/-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.
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| 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 (Contact VDI for more information) |
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) |
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Contact us today for a quote, additional information, or to discuss specifications.
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ECONOMY SYNTHESIZER
| VDI Economy Frequency Synthesizer Data Sheet |
| 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 |
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Contact us today for a quote, additional information or to discuss specifications.
FREQUENCY COUNTER
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VDI frequency counters were designed specifically to measure the fundamental frequencies driving VDI frequency extenders. The design is streamlined to avoid the extra size and cost of unnecessary features. The frequency ranges from 0.5 - 20 GHz for an input power of 0 - 10 dBm. The display resolution is 7 digits, but 32 bits of resolution can be read through a USB cable connected to a PC. The measurement time can be set to make fast measurements with moderate relative accuracy, such as 4 kHz within 100 ms. The unit is small (3.75 x 2.5 x 1.6”) and is powered through a USB cable connected to a computer without the need for a power supply or wall plug. Software drivers are provided that can be used with most programming languages and open source code for the user interface is also provided in Labview 7.0.
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| VDI Frequency Counter Data Sheet |
| 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 3.84 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 |
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Contact us today for a quote, additional information or to discuss specifications.
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