Signal Channel |
Voltage Input |
Modes |
A only, -B only or Differential (A-B) |
Frequency Response |
1 mHz < F < 120 or 250 kHz* |
Full-scale Sensitivity |
10 nV to 1 V in a 1-2-5 sequence (e.g. 10 nV, 20 nV, 50 nV, 100 nV, etc.) |
Impedance - FET input |
10 MΩ // 25 pF, AC or DC coupled |
Impedance - Bipolar input |
10 kΩ // 25 pF, input must be DC coupled |
Max safe input |
±12.0 V |
Voltage Noise - FET input |
5 nV/√Hz @ 1 kHz |
Voltage Noise - 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 |
±0.5% typ, ±1.0% max |
Distortion |
-90 dB THD (60 dB AC gain, 1 kHz) |
Current Input |
Mode |
Low Noise (10E8 V/A) or Wide Bandwidth (10E6 V/A) |
Full-scale Sensitivity |
|
Low Noise |
10 fA to 10 nA in a 1-2-5 sequence |
Wide Bandwidth |
10 fA to 1 µA in a 1-2-5 sequence |
Frequency Response (-3 dB): |
|
Low Noise |
1 mHz < F < 500 Hz minimum |
Wide Bandwidth |
1 mHz < F < 50 kHz minimum |
Impedance |
|
Low Noise |
< 2.5 kΩ @ 100 Hz |
Wide Bandwidth |
< 250 Ω @ 1 kHz |
Noise |
|
Low Noise |
13 fA/√Hz @ 500 Hz |
Wide Bandwidth |
130 fA/√Hz @ 1 kHz |
Gain Accuracy |
±2.0% typ, midband |
Either Input Mode |
|
Line Filter |
Filter can be set to attenuate 50/60 Hz, 100/120 Hz, or both frequency bands |
Max. Dynamic Reserve |
> 100 dB |
Grounding |
BNC shield can be grounded or floated via 1 kΩ to ground |
Signal Molnitor Amplitude |
±1 V FS. This is the signal after preamplification and filtering, but before transmission over the optical link |
Output Impedance |
1 kΩ |
Reference Channel |
Reference Input |
TTL input setting |
|
Freq. Range |
1 mHz to 120 or 250 kHz* |
Analog input setting |
|
Impedance |
1 MΩ // 30 pF |
Sinusoidal Level |
1.0 V rms* |
Frequency Range |
0.5 Hz to 250 kHz* |
Squarewave Input Level |
250 mV rms |
Frequency Range |
2 Hz to 120 or 250 kHz* |
Reference Channel |
Phase Set Resolution |
0.001° increments |
Phase Noise at 100 ms TC, 12 dB/octave slope: |
|
Internal Reference |
< 0.0001° rms |
External Reference |
< 0.01° rms @ 1 kHz |
Orthogonality |
90° ± 0.0001° |
Acquisition Time |
|
Internal Reference |
instantaneous acquisition |
External Reference |
2 cycles + 1 s |
Reference Frequency Meter Resolution |
4 ppm or 1 mHz, whichever is the greater |
Demodulator and Output Processing |
Output Filters |
|
Time Constant |
10 µs to 100 ks in a 1-2-5 sequence |
Slope (roll-off): |
|
TC < 5 ms |
6 or 12 dB/octave |
TC > 5 ms |
6, 12, 18 or 24 dB/octave |
Synchronous Filter |
Available for F < 20 Hz |
Offset |
Auto and Manual on X and/or Y: ±300% full-scale |
Phase Measurement Resolution |
< 0.01º |
Reference Monitor |
Rear panel TRIG OUT connector can be configured to generate TTL signal at current reference frequency, internal or external |
Oscillator - General |
Frequency |
|
Range |
1 mHz to 120 or 250 kHz* |
Setting Resolution |
1 mHz |
Absolute Accuracy |
± 50 ppm |
Amplitude |
|
Range |
1 µV to 5 V |
Max. Setting Resolution |
1 µV |
Output impedance |
50 Ω |
Sweep |
|
Frequency Sweep |
|
Output Range |
1 mHz to 120 or 250 kHz* |
Law |
Linear or Logarithmic |
Step Rate |
1 kHz maximum (1 ms/step) |
Amplitude Sweep |
|
Output Range |
0.000 to 1.000 V rms |
Law |
Linear |
Step Rate |
20 Hz maximum (50 ms/step) |
Oscillator Output |
Amplitude |
|
Accuracy |
±0.2% typ |
Stability |
50 ppm/ºC |
Distortion (THD) |
-80 dB @ 1 kHz and 100 mV rms |
Data Storage Buffer |
Size |
100,000 data points |
Max. Storage Rate |
|
Fast Mode |
up to 1 MHz (X1, Y1, X2, Y2, ADC1, Demod I/P 1, Demod I/P 2) |
Normal Mode |
1 kHz |
General |
Power Requirements |
Via external model PS0110 universal power supply |
Voltage |
100 - 240 VAC |
Frequency |
47 - 63 Hz |
Power |
40 VA max |
Dimensions |
|
Width |
Width 15½" (390 mm) |
Depth |
Depth 10" (250 mm) |
Height |
|
With feet |
With feet 3" (75 mm) |
Without feet |
Without feet 2½" (64 mm) |
Weight |
Weight 6.6 lb (3.0 kg) |
Options |
Model 7230/99 |
Increases upper reference frequency limit from 120 kHz to 250 kHz. Can be installed by firmware upgrade. |
|
Preliminary specifications subject to change without notice |