Ametek 7270 User Manual

Chapter 1, INTRODUCTION
1-3
1.3 Key Specifications and Benefits
The SIGNAL RECOVERY Model 7270 represents a further significant advance in
the application of DSP technology in the design of a lock-in amplifier.
Key specifications include:
 Frequency range: 0.001 Hz to 250.000 kHz
 Voltage sensitivity: 2 nV to 1 V full-scale
 Current input mode sensitivities: 2 fA to 1 µA full-scale
2 fA to 10 nA full-scale
 Line frequency rejection filter
 Dual phase demodulator with X-Y and R- outputs
 Very low phase noise of < 0.0001
°
rms
 Output time constant: 10 µs to 100 ks
 5-digit output readings
 Dual reference mode - allows simultaneous measurement of two signals at
different reference frequencies.
 Single and dual harmonic mode - allows simultaneous measurement of up to two
different harmonics of a signal
 Tandem demodulation capability - suitable for double demodulation experiments
that would previously have required two lock-in amplifiers
 Spectral Display mode shows frequency spectrum of the signal prior to the
demodulators to help in selecting a reference frequency
 Virtual reference mode - allows reference free measurements
 Direct Digital Synthesizer (DDS) oscillator with variable amplitude and
frequency
 Oscillator frequency and amplitude sweep generator
 Voltage controlled oscillator frequency or amplitude
 8-bit programmable digital I/O port for external system control
 Four configurable DAC outputs which can be used as analog signal outputs
and/or as auxiliary DAC outputs
 Four auxiliary ADC inputs
 Full range of auto functions
 Non-volatile memory for 8 complete instrument settings
 Standard USB, Ethernet, and RS232 interfaces with RS232 daisy-chain
capability for up to 16 instruments.
 Large high-resolution color LCD display panel with menus for control and
display of instrument outputs in both digital and graphical formats
 Easy entry of numerical control settings using keypad
 100,000 point internal curve storage buffer

Ametek 7270 Specifications

General

Brand	Ametek
Model	7270
Category	Amplifier
Language	English