Component Parameter Test Instruments A. TH2638 / A / B / C Precision Capacitance Meter Features ■ 4.3 inch TFT LCD display ■ Selectable Chinese and English operation interface ■ Max. test frequency: 1MHz ■ Highest test speed: 2.3ms/time ■ Basic test accuracy : ±0.07% ■ Loss factor: ±0.0005 ■ V, I test signal level monitor function ■ Low impedance measurement, signal level compensation Rack mount (mm): 280(W) x 88(H) x 370(D) Dimension (mm): 369(W) x 108(H) x 408(D) Net weight: 5 kg function ■ Built-in 11-bin comparator ■ Internal file storage and external U disk file storage ■ Test data can be directly saved in U disk ■ Screen shot can be saved in U disk ■ Compatible with SCPI commands ■ RS232C, USB CDC, LAN, HANDLER, GPIB interfaces ■ Manipulator interface and scanner interface ■ Contact inspection function ■ Synchronizing signal source ■ Offset function in 1MHz test frequency (±1, ±2%) Specifications Model Test parameters Test signal Level Output mode Signal source delay Signal level compensation Permitted frequency Accuracy Range Resolution Accuracy Range Resolution 100/120Hz 1kHz 100 Hz 120Hz Output impedance TH2638A Cp-D, Cp-Q, Cp-Rp, Cp-G, Cs-D, Cs-Q, Cs-Rs, Cs-Rs-Ls ±0.02% 0.1V-1V 0.01V ±5% Continuous or synchronous 0-1s 0.1ms 220μF, 470μF, 1mF range 22μF, 47μF, 100μF range SLC OFF ( ≥ 220μF range) 1.5 Ω SLC ON ( ≥ 220μF range) 0.3 Ω 2.2μF - 100μF range 0.3 Ω 10 nF - 1μF range 10 Ω SLC OFF ( ≥ 22μF range) 1.5 Ω SLC ON ( ≥ 22μF range) 0.3 Ω 220 nF - 10μF range 0.3 Ω