|
Print version
Fiber Optic Frequency Transfer Modem VCH-607The VCH-607 fiber-optic modem of reference signals is designed for receiving and transmitting electrical signals with nominal frequency 100 MHz through a fiber-optic system and generating electrical signals with nominal frequencies 5 and 10 MHz, coherent with the input signal.
Reception/transmission of high precision signals via the fiber optic communication line (FOCL) is provided using a pair of modems: one is configured as a Transmitter and installed at the end of the FOCL where the signal source is located, the second – as a Receiver and installed at the opposite end of the FOCL.
Key applications:
− metrology;
− time scale comparison systems;
− production and testing of high precision oscillators and devices based on them;
− scientific research.
Specifications
The optical characteristics of the modem correspond to Class 1 of laser safety, according to IEC 60825-2-2013.
Optical signals are transmitted via the FOCL based on a single-mode optical fiber up to 200 m length.
The type of optical connectors is FC/APC.
Input electrical signals:
– sinusoidal: 100 MHz, root mean square (RMS) voltage value — (1 ± 0.2) V at a load of 50 ohms;
Output electrical signals:
– sinusoidal: 5 MHz, 10 MHz, 100 MHz, RMS voltage value — (1 ± 0.2) V at a load of 50 Ω;
Metrological characteristics
| Averaging time, τ |
Allan deviation noise floor |
| 1 s |
1.0∙10−13 |
| 10 s |
2.0∙10−14 |
| 100 s |
5.0∙10−15 |
| 1 hour |
7.0∙10−16 |
Dimensions (H×W×D) – 140×236×326 mm.
|
|
