|
|
Gain |
Sigma 4-3 |
Sigma 4-4 |
Sigma 4-3+ |
Sigma 4-4+ |
Input Channels |
|
3 |
4 |
3 |
4 |
Convertor Circuit |
|
Sigma 3 |
DAQ4 |
Sigma 3 |
DAQ4 |
PreAmp Gains |
|
Low x1 (0 dB) High x16 (24 dB) |
Low x1 (0 dB) Mid x4 (12 dB) High x16 (24 dB) |
Low x1 (0 dB) High x16 (24 dB) |
Low x1 (0 dB) Mid x4 (12 dB) High x16 (24 dB) |
Maximum Input |
Low |
5 Volts P2P |
7 Volts P2P |
5 Volts P2P |
7 Volts P2P |
Mid |
- |
1.662 Volts P2P |
- |
1.662 Volts P2P |
High |
0.313 Volts P2P |
0.4375 Volts P2P |
0.313 Volts P2P |
0.4375 Volts P2P |
Typical Dynamic Range @500sps |
Low |
126 dB |
125 dB |
126 dB |
125 dB |
Mid |
- |
124 dB |
- |
124 dB |
High |
122 dB |
120 dB |
122 dB |
120 dB |
Typical Harmonic Distortion @500sps |
Low |
0.0001% |
0.0001% |
0.0001% |
0.0001% |
Mid |
- |
0.0001% |
- |
0.0001% |
High |
0.0001% |
0.0001% |
0.0001% |
0.0001% |
Typical Noise Floor @500sps |
Low |
0.8 uVolts RMS |
1.2 uVolts RMS |
0.8 uVolts RMS |
1.2 uVolts RMS |
Mid |
- |
- |
- |
- |
High |
0.08 uVolts RMS |
0.15 uVolts RMS |
0.08 uVolts RMS |
0.15 uVolts RMS |
Sample Rates |
|
125, 250, 500, 1000, 2000 & 4000 sps |
125, 250, 500, 1000, 2000, 4000, 8000, 16000, 32,000 and 64,000 sps |
125, 250, 500, 1000, 2000 & 4000 sps |
125, 250, 500, 1000, 2000, 4000, 8000, 16000, 32,000 and 64,000 sps |
Sample Intervals |
|
8000, 4000, 2000, 1000, 500 & 250 μSecs |
8000, 4000, 2000, 1000, 500, 250, 125, 62.5, 31.25,15.625 μSecs |
8000, 4000, 2000, 1000, 500 & 250 μSecs |
8000, 4000, 2000, 1000, 500, 250, 125, 62.5, 31.25,15.625 μSecs |
Low Cut Filters |
|
Digital |
Digital |
Digital |
Digital |
High Cut Filters |
|
85% Nyquist |
85% Nyquist |
85% Nyquist |
85% Nyquist |
Bandwidth |
|
DC to 85% Nyquist |
DC to 85% Nyquist |
DC to 85% Nyquist |
DC to 85% Nyquist |
Maximum Trace Length |
|
Continuous Recording |
Continuous Recording |
Continuous Recording |
Continuous Recording |
Input Impedance |
|
20 kOhm |
100 kOhm |
20 kOhm |
100 kOhm |
|
External USB |
|
Ruggized 19-pin |
Ruggized 19-pin |
Ruggized 19-pin |
Ruggized 19-pin |
Mesh Radio Network |
|
Optional |
Optional |
Optional |
Optional |
100Base-Tx Ethernet |
|
Rugged 10 pin MS style |
Rugged 10 pin MS style |
Rugged 10 pin MS style |
Rugged 10 pin MS style |
External Trigger |
|
Yes |
Yes |
Yes |
Yes |
Internal Memory |
|
8 Gbytes |
8 Gbytes |
8 Gbytes |
8 Gbytes |
Internal Battery |
|
Optional |
Optional |
Optional |
Optional |
Internal Coprocessor |
|
No |
Optional |
No |
Optional |
Internal Sensor |
|
Optional |
Optional |
Optional |
Optional |
Power Requirement |
|
0.4 Watts/channel |
0.4 Watts/channel |
0.4 Watts/channel |
0.4 Watts/channel |
Voltage Requirement |
|
9-28 Volts |
9-28 Volts |
9-28 Volts |
9-28 Volts |
Case Type |
|
Aluminum |
ABS |
Aluminum |
ABS |
Size |
|
393 x 140 x 57 mm 15.5 x 5.5 x 2.25 in |
353 x 140 x 66 mm 13.9 x 5.5 x 2.6 in |
393 x 140 x 57 mm 15.5 x 5.5 x 2.25 in |
353 x 140 x 66 mm 13.9 x 5.5 x 2.6 in |
Weight (with options) |
|
7.1 lbs (3.7 kg) |
5.8 lbs (2.5 kg) |
7.1 lbs (3.7 kg) |
5.8 lbs (2.5 kg) |
Temperature Range |
|
-40 C to 80 C |
-40 C to 80 C |
-40 C to 80 C |
-40 C to 80 C |
|