Ametek 7230 User Manual

Specifications
Appendix A
A-1
Measurement Modes
X In-phase 
Y Quadrature  The unit can simultaneously show any
R Magnitude  four of these outputs on the front panel
 Phase Angle  display
Noise 
Harmonic nF, n  127
Dual Harmonic Simultaneously measures the signal at two different
harmonics F
1
and F
2
of the reference frequency
Dual Reference Simultaneously measures the signal at two different
reference frequencies, F
1
and F
2
, where F
1
and F
2
can be
set to be derived from the internal and/or external
reference sources.
Tandem Reference A variation of the Dual Reference mode, where the
signal is demodulated using the internal reference
frequency F
1
, and the resulting X1 channel output is
passed to a second demodulator running at an external
reference frequency F
2
Virtual Reference Locks to and detects a signal without a reference
(100 Hz  F  120 or 250 kHz)
Noise Measures noise in a given bandwidth centered at the
reference frequency F
Signal Channel
Voltage Inputs
Modes A only, -B only or Differential (A-B)
Frequency Response 0.001 Hz  F  250 kHz
Full-scale Sensitivity 10 nV to 1 V in a 1-2-5 sequence (e.g. 10 nV,
20 nV, 50 nV)
Input Impedance
FET Input 10 M // 25 pF, AC or DC coupled
Bipolar Input 10 k // 25 pF, input must be DC coupled
Maximum Safe Input ±12.0 V
Voltage Noise (typ)
FET Input 5 nV/Hz @ 1 kHz
Bipolar Input 2 nV/Hz @ 1 kHz
C.M.R.R. >100 dB @ 1 kHz degrading by no more than
6 dB/octave with increasing frequency
Gain Accuracy ±1.0% typ, ±2.0% max.
Distortion –90 dB THD (60 dB AC gain, 1 kHz)

Ametek 7230 Specifications

General

Brand	Ametek
Model	7230
Category	Amplifier
Language	English