Key Specifications And Benefits - Ametek 7124 Instruction Manual

1.3 Key Specifications and Benefits

These characteristics, all available in a compact system, make it an invaluable
addition to any laboratory.
In addition to its unique fiber optic link to isolate the experiment from digital
switching noise, the SIGNAL RECOVERY Model 7124 represents a further
significant advance in the application of DSP technology in the design of a lock-in
amplifier.
Key specifications include:
 Analog fiber optic link to eliminate digital switching noise being emitted from
the 7124 RCU connectors
 Frequency range:
 Voltage sensitivity:
 Current input mode sensitivities:
 Line frequency rejection filter
 Dual phase demodulator with X-Y and R- outputs
 Very low phase noise of < 0.0001
 Output time constant:
 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 and amplitude
 8-bit programmable digital I/O port for external system control on the main
console; 8-bit programmable digital output port on the 7124 RCU
 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
Chapter 1, INTRODUCTION
0.5 Hz to 150.000 kHz
10 nV to 1 V full-scale
10 fA to 1 µA full-scale
10 fA to 10 nA full-scale
°
rms
10 µs to 100 ks
1-3