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General Information
Demodulator / Output
Reference channel
Reference output
SR124 Analog Lock-In Amplifier
Parameter
Output gain stability
Low noise
Normal
High reserve
Output filter
Time constants
Output impedance
Parameter
Frequency range
Reference input
Minimum pulse width
Input impedance
Phase resolution
Phase accuracy
Harmonic detection
Parameter
Range
Waveform
Frequency accuracy
Frequency resolution
Amplitude range
Amplitude accuracy
Amplitude flatness
Amplitude stability
Output impedance
DC bias
Specification
50 ppm C
100 ppm C
1000 ppm C
6 dB oct or 12 dB oct
1 ms to 300 s in 1–3–10 steps
600
Specification
0.2 Hz to 210 kHz
TTL or sine, 100 mVrms min. f
500 mVrms min. f
locks to positive-going zero crossing (sine),
positive edge (TTL).
100 ns (TTL mode)
1 M
AC coupled, 10 s time constant (sine)
DC coupled (TTL)
0.01
5 (2 Hz to 20 kHz)
10 (20 kHz to 210 kHz)
F, 2 F, and 3 F (ext. ref.)
Specification
0.2 Hz to 210 kHz
sine, square
0.1% (20 Hz to 21 kHz)
3-1 2 digits or 1 mHz
100 nV to 10 Vrms into high-Z
1% at 1 kHz (on 20 Hz to 2.1 kHz range)
1% for upper decade of each range
5% for lower decade of each range
50 ppm C, typ.
50
commandable, to 10 amplitude,
or 10 VDC max (amp. dependent;
see section 3.4 for details)
ix
2 Hz,
2 Hz
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