EXTENDER ASSEMBLY

TM 11-6625-3081-23 1-10. DESCRIPTION OF ELECTRONIC STATION (cont) 1-10 j. EXTENDER ASSEMBLY 1A9 The extender assembly 1A9 consists of two HP-IB extenders 1A9A1 and 1A9A2 (Hewlett Packard Model 37203A), a support shelf kit, and drawer slide sections. The front panel of each extender contains an input power ON/OFF pushbutton switch and a POWER ON LED indicator. It contains two other front panel mounted LEDs used for DATA LOSS and DATA ERRORS indications. The rear panel contains a HP-16 coaxial connection for interconnection between extenders, a 115/230 vac receptacle and fused circuit, a MASTER/SLAVE switch, and SERIAL DATA RATE switch. The fused circuit features a safe guard situation that requires removal of the 115/230 vac receptacle before the fuse can be removed. A ground lead is installed on the rear of the extender shelf and connected to a ground lead on the electronic station. The HP-IB communication linkup is set up in a tandem configuration where all extenders are connected in series. The extender converts the HP-IB protocol parallel input signal into a series output signal and transmits same to a receiving extender. Physical Dimensions: Length 14.02 in Electrical Input: 115v +11v -7v, 48 Hz to 66 Hz Width 8.39 in Operating Temperature: 32° thru 131°F Height 3.50 in Weight 7.7 lb 1-23