Appendix ‘A’
Specifications of Ultra High Frequency Lock-in Amplifier
Technical specification
Lock-in Operating Modes
Internal reference mode : Single and dual lock-in
External reference mode : Single and dual lock-in
Triple-harmonic mode : 1 fundamental + 3 harmonics (simultaneous)
UHF Signal Inputs and Outputs
Frequency range : DC - 600 MHz
Input impedance : 50 Ω and 1 MΩ || 16pF
Input voltage noise : 4 nV/√Hz above 100 kHz
Dynamic reserve : 100 dB
Input range (AC+DC) : ±3.5 V
Input full range sensitivity : 1 nV to 1.5 V
A/D conversion : 12 bit, 1.8 GSa/s
D/A conversion : 14 bit, 1.8 GSa/s
Output ranges : ±150 mV, ±1.5 V (high-impedance load)
-12.5 dBm, 7.5 dBm (50 Ω load)
Reference & Nanosecond Triggers
Frequency Range :10 Hz - 600 MHz (external reference)
Connectors :2 bidirectional, 2 output, 2 input
Reference frequency resolution : 6 µHz
Reference phase angle resolution : 1.0 µ°
Demodulators and Oscillators
Oscillator frequency range : 1 mHz - 600 MHz
Number of demodulators : 8
Output sample rate on GBit LAN : 2 MSa/s (total all demodulators), 64-bit full range
Output sample rate on USB : 100 kSa/s (total all demodulators), 64-bit full range
Output sample rate on Aux outputs : 28 MSa/s (for each auxiliary output), 16 bit
Filter time constant : 30 ns - 76 s
Filter bandwidth : 80 µHz - 5 MHz
Filter slope : 6, 12, 18, 24, 30, 36, 42, 48 dB/Oct
Auxiliary Outputs and Inputs
High-speed outputs : 4 channels, ±10 V, Amplitude, Phase, X, Y, frequency or user defined
D/A converter : 16 bit, 28 MSa/s
D/A analog bandwidth : 7 MHz
High-speed inputs : 2 channels, ±10 V
A/D converter : 16 bit, 400 kSa/s
A/D analog bandwidth : 100 kHz
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Time and Frequency Domain Analysis Tools
Numeric tool
Oscilloscope
Frequency response analyzer
FFT spectrum analyser
SW trigger
Connectivity & Others
LAN / Ethernet : 1 Gbit/s
USB 2.0 high-speed : 480 Mbit/s
Digital I/O : 32 bit, 50 MHz, general purpose
Clock : 10 MHz, input and output, ultra-high stable oscillator
Software/Hardware
PC operating systems : 32-bit and 64-bit version of Vista, Windows 7, Windows 8, Linux
Compatibility with LabVIEW, MatLab, C and Python
General
Dimensions : 19 inch rack compatible
Power supply : 220 V, 50 Hz
Operating temperature : +5 °C to +40 °C
Signal connectors : BNC on front panel,
SMA on back panel
Data acquiring hardware, Data transfer cable, USB cable, power cable and other
accessories required for the complete operation of the Lock-in Amplifier should be
provided.
Installation and demonstration of the Lock-in Amplifier should be provided by the
vendor at the user’s site.
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