主设备通过发送一-个查询或广播请求信息开始发送数据。如果主设备发送一-个查询信息到一个从设备，从设备通过发送一-个响应信息来表示完成数据传输完成。当主设备发送的是广播请求时，则从设备没有响应信息发送。

Valve Trap Manifold 8551A Yarway 600 PSI / 3/4″ NSN 473

Opto-Mechanical Assembly Canon FPA Stepper

Tie Down Modification 57K4449 49.5″x 24.5″x 20″ NSN 39

Oscilloscope – Part #: AN/USM-425(V)1

Gear Box Servo 32058-5006-2 Ratio 1: 36 Winfred M. Ber

Aircraft Landing Gear PN 70250-13103-041 Fork NSN 16200

Scientific Atlanta 4180A Position Remote Control **SALE

Sokkia Planix Tamaya digital planimeter 5,6

LOW LEVEL CONDITIONER – P/N 472580-009

LAMBDA POWER SUPPLY, MODEL LM G5-OVM-R, 5 VOLT, 80 AMPS

VR ELECTRONICS HIGH VOLTAGE SCR MODULE 80063A319154700​1

Tektronix 1730 Wave Form Monitor, LOT OF (7) SEVEN

Hewlett Packard 37717A Test Set

Chemwest Systems 420604 Polypro TC carrier, 55″ x 15.5″

REMOTE AUDIO DATA INTERFACE CONTRACT NO. N0042101C0169