Section 2
2-2
2.2. GENERAL SPECIFICATIONS (continued)
6675A AUTOMATIC DCC RESISTANCE BRIDGE
General Specifications
Measurement Resistance Range 1 m to 1 G
Resistance Ratio (Rx/Rs) Range
0.078 to 13.4
Linearity ±0.01 ppm of
full scale
Temperature Coefficient
(+10 to +18)C (+28 to +40)C
±0.01
ppm/C
Warm-up time to full rated accuracy 60 minutes
Display update rate (digital filter off) 2 X Current Reversal
rate
seconds
Automatic Current Reversal
Rate (programmable)
4 to 32000
in steps of 2
seconds
Analog output Range ±5.0 VDC
Accuracy ±5 mV
Digital Resolution 12 binary
bit
Maximum Ratio Resolution
(programmable)
0.001 ppm
Digital Communication IEEE488, RS232
Test Currents Range
(to 30Vdc compliance)
0.5 to 150m
A
Steps
0.5
A
Accuracy
±100 ±10
ppm + A
Stability
(10 minutes)
±1 ppm
Table 2-2 : General Specifications (continued)