| Input |
| Inputs |
AC or DC coupled, single-ended or differential |
| Input impedance |
100 MΩ + 25 pF |
| Maximum input |
3 Vpp |
| CMRR |
100 dB from DC to 1 kHz (100 mVrms common mode input at 1kHz , gain=100, low noise mode. Decreases by 6 dB/octave from 1 kHz to 1 MHz) |
| Noise |
4 nV/√Hz at 1 kHz |
| Gain |
1 to 50,000 in 1-2-5 sequence. Vernier gain in 0.5 % steps. |
| Gain stability |
200 ppm/°C |
| Bandwidth |
-3 dB at 1.2 MHz (typ.) |
| Flatness |
±0.3 dB to 300 kHz (gains up to 1000) |
| Filters |
| Signal filters |
2 configurable (low-pass or high-pass) 6 dB/oct rolloff filters. -3 dB points are settable in a 1-3-10 sequence from 0.03 Hz to 1 MHz. |
| Gain allocation |
High Dynamic Reserve — Gain is increased after the signal filters to prevent overloading.
Low Noise — Gain is increased before the filters to improve noise figure. |
| Output |
| Maximum output |
10 Vpp into 50 Ω and 600 Ω |
| Filter reset |
Long time constant filters may be reset with front-panel button. |
| DC drift |
5 µV/°C referred to input (DC coupled) |
| Distortion |
0.01 % at 1 kHz |
| Rear panel |
±12 VDC @ 200 mA referenced to amplifier ground |
| General |
| External gating |
TTL input sets gain to zero |
| Interfaces |
RS-232, 9600 baud, receive only |
| Power |
100/120/220/240 VAC, 6 watts charged, 30 watts while charging. Internal batteries provide 15 hours of operation between charges. Batteries are charged while connected to the line. |
| Dimensions |
8.3" × 3.5" × 13.0" (WHL) |
| Weight |
15 lbs. (batteries installed) |
| Warranty |
One year parts and labor on defects in materials and workmanship |