功能 Characteristics：
◆ 常溫下測量的參數(shù) Parameters measured under normal temperature:
    放大倍數(shù)β(0~99)
    開關時間 Switching time T (0.01μs~99.9μs)，包括上升時間，存儲時間，下降時間 including Tr，Ts，Tf
    飽和壓降VCES (0~2V)，正向壓降VBE (0~2V)
    漏電流 Leakage current ICEO (0.1μA~3mA)
    耐壓 Withstand voltage BVCEO (50V~650V)
◆ 高溫下測量的參數(shù) Parameters measured under high temperature: β, VBE, ICEO
◆ 對比常溫和高溫下的兩次測量結果，對β、VBE、ICEO 三項參數(shù)變化量超過一定范圍的管子以聲光報警，予以剔除 
    Compare the results of β, VBE , ICEO measured in normal and high temperature, the selector will alarm to those 
    variations exceed the preset limits so that operators can pick them out
◆ 對T、β進行分檔，可顯示批號；對VCES、VBE、 ICEO、BVCEO 及熱敏參數(shù)進行超限判斷，不合格的聲光報警， 并指示不合格項 
    Pre-set grouping values for T & β, selector can display group number and alarm when measured values  of VCES,
    VBE, ICEO and BVCEO exceed the limits, meanwhile indicating the unqualified item
◆ 測試條件可按要求自由調節(jié)或設定 Freely adjusting or setting of test conditions according to requirement
    A. β測試 β testing: Ib 注入電流有三檔 three different Ib current: 0.1mA, 1mA, 10mA
    B. 開關時間測試 Switching time test:  Ic 電流有四檔 4 different Ic current: 0.5A, 0.25A, 0.1A, 0.05A
                                                                        對應 Ib 電流為 the corresponding current Ib: 0.1A, 0.05A, 0.02A, 0.01A
    C. 對晶體管加熱條件 Heating condition for transistor:
    加熱電壓 Heating voltage: 5~20V      連續(xù)可調 continuously adjustable
    加熱時間 Heating time: 0~9.9s          連續(xù)可調 continuously adjustable
◆ 分檔、超限判斷可自由設定，掉電自動保存，儀器能夠同時保存20組數(shù)據(jù)，使用時只要調出其中一組即可  
    Grouping values and limit values freely set, with automatically saving function in case of power cut; the instrument can save 20 
    different settings, choose one setting when using
◆ 四窗口數(shù)字顯示所測數(shù)據(jù)，讀數(shù)直觀，可打印所測數(shù)據(jù)  
    4 windows for displaying measured values, easy to read, and printable