电容表 7200系列

此系列的电容表参数如下所示：

Capacitance Display
Capacitance Range 0 to 2000 pF
Full Scale Ranges 2, 20, 200, 2000 pF
Accuracy 0.25% of reading
+0.2% of full scale +0.005 pF
Resolution 0.001 pF from 0 to 2 pF
0.01 pF from 2 to 20 pF
0.1 pF from 20 to 200 pF
1 pF above 200 pF
Conductance Display
Conductance Range 0 to 2000 μS
Full Scale Ranges 2, 20, 200, 2000 μS
Accuracy
2.5% of reading +2.0% of full scale +0.05 μS + 2 (ωC)2
Where C is the parallel capacitance in Farads
Residual Series Resistance 2Ω maximum
Resolution 0.01 μS from 0 to 2 μS
0.1 μS from 2 to 20 μS
1 μS from 20 to 200 μS
10 μS above 200 μS
Computed Parameters
Series Capacitance 0.000 to ±9999 pF
Series Resistance 0.00 Ω to ±9.999 MΩ
Parallel Resistance ±488.5 Ω to ±9.999 MΩ
Dissipation 0.000 to ±999.9
Quality Factor 0.000 to ±999.9
ΔC 0.000 to ±4047 pF
Δ% 0.00 to ±99.99%
Temperature Influences
Operating Temperature 10° C to 40° C
Amplitude Error <± 0.017% /° C
Phase Error <± 0.2° /° C
Warmup Time 2 Hours
Test Signal
Frequency 1.0 MHz, crystal-controlled
Level Programmable
15, 30, 50 and 100 mV
External Bias
Voltage Range ±60 V
Maximum current 62.5 mA fuse protected

External Bias Display
Voltage Range ±60 V
Resolution 0.1 V
Accuracy 0.25% of rdg + 4 counts
Internal Bias
Voltage Range ±60 volts, programmable from
the front panel
Accuracy 0.5% of setting + 10 counts
Resolution 1 mV for voltages ≤ 20 V
10 mV for voltages > 20 V
Maximum Current 5 mA