531 Selection of Display Unit……189 5.32 Indication Lamps of Display Unit………190 53.3 Multifunction Display……"………191 5.4 Development Tendency of Control and Display Subsystem……………s……192 Chapter6 Built- in Test Subsystem……:19 6.1 Built-in- Test design……………………………195 6.1.1 Design Feature of Built-in- Test Subsystem 195 6.1.2 Design Requirements of built-in-Test Subsystem …195 6.1.3 Structure of Built-in-Test Subsystem ,sa,,,,.n-, 196 6.2 Operation Modes of Built-in-Test .s. 1983 6.2.1 Powerup bIT 198 6.2.2 Pre-Flight Bit 199 6.2. 3 ir-Flight bIT 200 6.2.4 Maintenance BIT 由●●.4卩●日日甲日日甲●●甲日日甲4.p自自目 201 63 Software design of Builtin-Test…………"201 63.1 Start-up of Built"in-Test…………202 6.3.2 Software design Feature of Built-in-Test ..m, 202 6.3. 3 Test Method of built-in Test .. 203 6.3.4 Function Requirement of Built-in- Test software…………………204 6.4 Hardware Design of Built-in-Test …………205 6.4.1 Hardware Design Requirement of Built-in-Test 205 6.4.2 Basic hardware Circuit………205 4.3 Several Spe E Cl rcuits citIC Energizing crc Built in Test 208 65 Processing and Recording of Failures…………2l1 Chapter7 Unit Test… 213