Installation10 Apollo SL30 Installation Manual3. The valid flag sensitivity shall be 125 mV ± 10% for the flag to leave the stop and260 mV ± 10% maximum for flag to be fully concealed.4. The To/From flag shall have an input impedance of 200 ohms ± 10% and a sensitivityof ± 40 mV ± 15% at 25 o C with flag fully in view.5. The OBS resolver should be compatible with a standard 6-wire OBS interface:H ...........Reference output highC............Reference output lowD ...........S1 COS input highE............S3 COS input lowF ............S4 SIN input highG ...........S2 SIN input lowAny electrical zero crossing will work because the SL30 will calibrate out any errors.Glideslope InstallationGlideslope installation requires:• SL30• External non-numeric glideslope indicator that meets the following criteria:1. The glideslope deviation shall have an input impedance of 1 k ohm ± 10% with adeflection sensitivity of 150 mV ± 10% for full scale deflection.2. The glideslope valid flag shall have an input impedance of 1 k ohm ± 10%.3. The glideslope valid flag sensitivity shall be 125 mV ± 10% for the flag to leave thestop, and 260 mV ± 10% maximum for flag to be fully concealed.Helicopter RequirementsThe SL30 is qualified for helicopter installation with certain mount tube and SLconfigurations (see Section 4 – Limitations).EQUIPMENT MOUNTINGOnce the cable assemblies have been made, attach the 15- and 37-pin d-sub and coaxial cableconnectors to the rear connector mounting plate and the mounting frame as illustrated inFigure 4 and Figure 5. Route the wiring bundle as appropriate. The rear connector plateshould be attached to the mounting frame before installing the frame in the instrument panel.The rear connector plate can be used to tie down the cable assemblies. Use the supplied edgeguard to protect the cable from sharp edges. Connect the shield grounds directly to theconnector mounting plate.Once the cable assemblies are complete and the connectors are attached to the mountingframe, install the mounting frame assembly in the instrument panel as illustrated in Figure 2.Be sure to use low-profile head screws in the side of the mounting frame so the unit will slidein and out freely. Attach the front of the mounting frame to the instrument panel. Use supportbrackets to attach the rear of the frame to the aircraft.M OUNTING TUBE I NSTALLATIONCare must be taken when installing the mounting tube to ensure you can properly insert andsecure the unit. There must be a minimum vertical spacing of 0.040 inches between units toprevent interference with the cam locking mechanisms. Mounting tubes with clearance