Constant-Voltage Excitation |
Range |
0.50 to 15.0 Vdc at 85 mA max |
Noise |
± 100 microvolts ± 0.002% p-p dc to 20 kHz |
Line Regulation |
± 200 microvolts ± 0.01 % max for line voltage change of 10% from nominal |
Load Regulation |
± 200 microvolts ± 0.01% max for load variation of 10% to 90% of full load |
Stability |
± 0.01%/deg C or 100 microvolts/deg C, whichever is greater |
Remote Sense |
Error <0.0005%/ ohms of lead resistance |
Monitoring |
Front-panel monitoring jacks |
Isolation |
Isolated from power ground and output common; floats with guard |
Constant-Current Excitation |
Range |
0.50 to 15.0 mA dc or 1.00 to 30.0 mA dc. Compliance voltage 0.50 to 16.0V |
Noise |
(1 microamps + 10 microvolts) p-p; dc to 20 kHz |
Line Regulation |
± 1 microamps ± 0.01% max for line voltage change of ± 10% from nominal |
Load Regulation |
± 1 microamps ± 0.01% max for 100% load change |
Stability |
± 0.01%/deg C or 1 microamp/deg C, whichever is greater |
Monitoring |
Front-panel monitoring jacks; 10 mV/mA |
Isolation |
Isolated from power ground and output common; floats with Guard |
Balance |
Method |
Electronically injected automatic balance |
Range |
± 15 000 microstrain (7.5 mV/V) RTI (X2 with internal jumper) |
Resolution |
0.50/microstrain RTI (X2 with internal jumper) |
Balance Time |
4 seconds typical; 8 seconds max |
Accuracy |
± 2 mV RTO; ± 2 microstrain RTI |
Balance Trim< /td> |
± 375 microstrain (188 microvolts/V) RTI |
Storage |
Digital with battery backup. Battery life 3-5 years |
Activation |
Activated by front-panel switch or by optically isolated remote switch or low TTL level |
Calibration |
Four internal shunt calibration resistors, + 0.1% tolerance |
174.8K, 1000 microstrain (0.50 mV/V), 350Ω bridge |
874.8K, 200 microstrain (0.10 mV/V), 350Ω bridge; |
59.94K, 1000 microstrain (0.50 mV/V), 120Ωbridge |