General Information vii
Resolution
Resolution is given in the table below. Upper values give excita-
tion current, while lower values are typical RMS resistance noise
measured at 50 % full scale on a room-temperature resistor with a
3 second output time constant.
Excitation
Range 30 mV 10 mV 3 mV 1 mV 300 µV 100 µV 30 µV 10 µV 3 µV
20 mΩN/A N/A N/A N/A N/A 10 mA 3 mA 1 mA 300 µA
44 µΩ130 µΩ510 µΩ1.5 mΩ
200 mΩN/A N/A N/A 10 mA 3 mA 1 mA 300 µA 100 µA 30 µA
8.9 µΩ12 µΩ32 µΩ120 µΩ590 µΩ1.4 mΩ
2ΩN/A 10 mA 3 mA 1 mA 300 µA 100 µA 30 µA 10 µA 3 µA
4.3 µΩ5.5 µΩ7.9 µΩ23 µΩ70 µΩ220 µΩ730 µΩ1.8 mΩ
20 Ω3 mA 1 mA 300 µA 100 µA 30 µA 10 µA 3 µA 1 µA 300 nA
20 µΩ21 µΩ33 µΩ41 µΩ100 µΩ390 µΩ1.7 mΩ4.1 mΩ10 mΩ
200 Ω300 µA 100 µA 30 µA 10 µA 3 µA 1 µA 300 nA 100 nA 30 nA
200 µΩ200 µΩ370 µΩ430 µΩ1.1 mΩ2.8 mΩ9.7 mΩ25 mΩ120 mΩ
2 kΩ30 µA 10 µA 3 µA 1 µA 300 nA 100 nA 30 nA 10 nA 3 nA
2.0 mΩ2.0 mΩ2.9 mΩ4.0 mΩ12 mΩ40 mΩ120 mΩ300 mΩ900 mΩ
20 kΩ3µA 1 µA 300 nA 100 nA 30 nA 10 nA 3 nA 1 nA 300 pA
20 mΩ25 mΩ31 mΩ56 mΩ200 mΩ640 mΩ2.4 Ω5.3 Ω23 Ω
200 kΩ300 nA 100 nA 30 nA 10 nA 3 nA 1 nA 300 pA 100 pA 30 pA
250 mΩ350 mΩ640 mΩ1.4 Ω4.5 Ω16 Ω47 Ω150 Ω710 Ω
2 MΩ30 nA 10 nA 3 nA 1 nA 300 pA 100 pA 30 pA 10 pA 3 pA
3.4 Ω5.9 Ω16 Ω46 Ω190 Ω480 Ω1.7 kΩ5.4 kΩ15 kΩ
20 MΩ3 nA 1 nA 300 pA 100 pA 30 pA 10 pA 3 pA 1 pA 300 fA
50 Ω190 Ω540 Ω1.1 kΩ5.4 kΩ12 kΩ56 kΩ180 kΩ750 kΩ
General Characteristics
Interface Serial (RS-232) through SIM interface
Connectors DB–9 (female)
AC 4–wire measurement +ground
DB–15 (male) SIM interface
Weight 1.4 lbs
Dimensions 1.500 W×3.600 H×7.000 D
SIM921 AC Resistance Bridge
