The GHFLI 1.8 GHz Lock-in Amplifier from Zurich Instruments. Dual channel lock-in amplifier designed to operate at frequencies from DC up to 1.8GHz. This amplifier extends the advantages of lock-in amplifiers; noise rejection, phase sensitivity, frequency tracking and more, to applications that operate at frequencies up to 1.8 GHz.
The GHFLI is the first commercially available lock-in amplifier system capable of operating in the GHz frequency range. It comprises two independent digital lock-in amplifiers, each capable of operating from DC up to a frequency of 1.8GHz. The GHFLI is operated via the LabOne browser-based software. This offers users an intuitive control environment and easy develpment of powerful API for ease of automation. The isntrument is fully upgradable in the field with a host of useful additional features.
| Lock-in operating modes | |
|---|---|
| Reference mode | Single and dual lock-in |
| Triple-harmonic mode | 1 fundamental + 3 harmonics (simultaneous) |
| Signal inputs | |
| Frequency range | DC – 1.8GHz |
| Input impedance | 50 Ω |
| Input voltage noise | ≤3.5 nV/√Hz (100 kHz to 800 MHz) ≤6 nV/√Hz (> 800 MHz) |
| Dynamic reserve | 100dB typical |
| Input ranges | ±10 mV to ±1 V |
| A/D conversion | 14 bits, 4GSa/s |
| Connectors | SMA |
| Signal outputs | |
| Frequency range | DC-1.8 GHz |
| Output ranges | ±10 mV to ±0.5 V -30 dBm to 5 dBm (50 Ω load) |
| D/A conversion | 14 bit, 6 GSa/s |
| Connectors | SMA |
| Reference and triggers | |
| Triggers | 4 inputs, 2 outputs |
| Demodulators | |
| Frequency range | DC-1.8 GHz |
| Number of demodulators | 8 dual-phase |
| Output sample rate on LAN/USB3 | 2 MSa/s maximum (total all demodulators) |
| Output sample rate on Aux outputs | 50 MSa/s (for each high-speed auxiliary output), 14 bit |
| Filter time constant | 14ns to 21s |
| Filter bandwidth | 3.2 mHz to 11 MHz |
| Filter slope | 6, 12, 18, 24 dB/Oct |
| Scope | |
| Input channels | Signal inputs |
| Scope modes | Time domain, frequency domain (FTT) |
| Number of display channels | 2 |
| Trigger mode | Edge |
| Vertical resolution | 14 bits |
| Cursor math | Location, area, wave, peak, tracking, histogram |
| Sweeper | |
| Scan parameters | Oscillator frequency, demodulator phase shift, auxiliary offset, signal output amplitudes, signal output offset |
| Parameter sweep ranges | Full range, linear and logarithmic |
| Parameter sweep resolution | Arbitrary, defined by start/stop value, and number of sweep points |
| Display parameters | Demodulator output (X, Y, R, Θ, f) |
| Display options | Single plot, dual plot (e.g. Bode plot), multi-trace |
| Statistical options | Amplitude, spectral density, power |
| Auxiliary signals | |
| High-speed outputs | 4 channels, ±4 V (in 50 Ω), 14 bit, 50 MSa/s, 15 MHz |
| High-precision outputs | 4 channels, ±4 V (in 50 Ω), 18 bit, 1 MSa/s, 200 kHz |
| Auxiliary outputs signals | R, Θ, X, Y, or user defined |
| High-speed inputs | 2 channels, ±1.5 V, 14 bit |
| Auxiliary connectors | BNC |
| Connectivity and others | |
| Host connection | LAN / Ethernet, 1 Gbit/s USB 3.0 |
| Digital I/O | 32 bits, general purpose |
| Clock | 10 MHz or 100 MHz input and output |
| General | |
| Dimensions | 420 × 450 × 100 mm3 16.5 × 17.7 × 3.9 inch3, suited for 19 inch rack |
| Weight | 10kg (22lb) |
| Power supply AC line | 100-240 V, 50/60 Hz |
| PC operating systems | See LabOne Compatibility |
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Photonic Solutions Ltd
Unit 2.2 Quantum Court
Heriot-Watt University Research Park
Edinburgh
EH14 4AP
