| Specifications |
| Input offset voltage |
<10 µV (autozero enabled) |
| Input impedance |
<1Ω (DC), 18 pF |
| Current gain |
106 V/A, 107 V/A or 108 V/A |
| Gain accuracy |
| (106 V/A) |
±0.1 % |
| (107 V/A) |
±0.1 % |
| (108 V/A) |
±1 % |
| Gain stability |
| (106 V/A) |
±10 ppm/°C |
| (107 V/A) |
±50 ppm/°C |
| (108 V/A) |
±100 ppm/°C |
| Bandwidth (typ.) |
| (106 V/A) |
22 kHz |
| (107 V/A) |
12 kHz |
| (108 V/A) |
4 kHz |
| Input noise (typ.) |
| (106 V/A) |
130 fA/√Hz @ 100 Hz |
| (107 V/A) |
42 fA/√Hz @ 100 Hz |
| (108 V/A) |
15 fA/√Hz @ 100 Hz |
| AC bias current |
3.5 pA rms (w/ autozero engaged) |
| DC bias current |
<2 pA |
| Input BNC shield |
Can be tied to chassis ground, set to the rear-panel analog input (Prog), or driven from the bias input |
| Bias Input |
| Range |
±5 VDC |
| Frequency response |
0.2 Hz |
| Input impedance |
10 MΩ |
| Input BNC shield |
Ground or float |
| Program Input (rear panel) |
| Function |
Connects to current input BNC shield when selected |
| Range |
±60 V |
| Input impedance |
3 GΩ (typ.) |
| Output |
| Range |
±10 V |
| Max. current |
100 mA |
| Autozero |
| Function select |
On or Hold |
| Int. switching freq. |
0.5 Hz |
| Ext. sync in/out |
1 pulse per second (pps), TTL level. Functions as a 1 pps sync output in internal mode. |
| Sync capture range |
±10 % of 1 pps |
| General |
| Operating temperature |
0 °C to 40 °C, non-condensing |
| Interface |
Serial via SIM interface |
| Connectors |
BNC (3 front, 2 rear) |
| DB15 (male) |
SIM interface |
| Power |
Power supplied by the SIM900 Mainframe, or optionally by a user-supplied DC power supply (±15 V and +5 V) |
| Dimensions |
1.5" × 3.6" × 7.0" (WHL) |
| Weight |
1.7 lbs. |
| Warranty |
One year parts and labor on defects in materials and workmanship |
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