| Signal Channel |
| Voltage Input |
| Modes |
A only, -B only or Differential (A-B) |
| Freq. Response |
1 mHz < F < 250 kHz |
| Full-scale Sensitivity |
2 nV to 1 V in a 1-2-5 sequence (e.g. 2 nV, 5 nV, 10 nV, 20 nV, etc.) |
| Z - FET |
10 MΩ // 25 pF, AC or DC coupled |
| Z - Bipolar |
10 kΩ // 25 pF, input must be DC coupled |
| Max safe input |
±12.0 V |
| Vin Noise - FET |
5 nV/√Hz @ 1 kHz |
| Vin Noise - Bipolar |
2 nV/√Hz @ 1 kHz |
| C.M.R.R. |
> 100 dB @ 1 kHz degrading by > 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 |
2 fA to 10 nA in a 1-2-5 sequence |
| Wide Bandwidth |
2 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 |
| Max. Dynamic Reserve |
> 100 dB |
| Grounding |
BNC shield can be grounded or floated via 1 kΩ to ground |
| Signal Monitor Amplitude |
±1 V FS |
| Output Impedance |
1 kΩ |
| Reference Channel |
| Reference Input |
| Frequency Range |
1 mHz to 250 kHz |
| Analog Input (front panel) |
|
| Impedance |
1 MΩ // 30 pF |
| Sinusoidal Input Level |
1.0 V rms* |
| Frequency Range |
0.5 Hz to 250 kHz |
| Squarewave Input Level |
250 mV rms |
| Frequency Range |
2 Hz to 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 |
| External Reference |
2 cycles + 1 s |
| Demodulator and Output Processing |
| Harmonic Rejection |
-90 dB |
| 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 |
| Oscillator - General |
| Freq. Range |
1 mHz to 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 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 |
| User Settings |
|
Up to 8 complete instrument settings can be saved or recalled at will from non-volatile memory |
| Interfaces |
|
USB 2.0, Ethernet, and RS232 allow complete control of instrument settings, and data readout. |
| General |
| Power Requirements |
|
| Voltage |
110/120/220/240 VAC |
| Frequency |
50/60 Hz |
| Power |
40 VA max |
| Dimensions |
|
| Width |
15½" (390 mm) |
| Depth |
7¼" (185 mm) |
| Height |
|
| With feet |
7¼" (185 mm) |
| Without feet |
6½" (170 mm) |
| Weight |
12.8 lb (5.8 kg) |
|
Specifications subject to change without notice |