12 Installation Note E4400-90252
4. Install Option UN9 (UN8 + UN9) overlay and align it with the connector holes. Press firmly on the
overlay, from the center outward, to eliminate air bubbles.
5. Reinstall W1 in the I INPUT hole (now located at the top). Attach it to the BNC with a hex nut and
spring washer. Torque to 21 in-lbs.
6. Reinstall W2 in the Q INPUT hole (now located at the top). Attach it to the BNC with a hex nut and
spring washer. Torque to 21 in-lbs.
7. Install W3 in the DATA INPUT hole. Attach it to the BNC with a hex nut and spring washer.
Torque to 21 in-lbs.
8. Install W4 in the DATA CLOCK INPUT hole. Attach it to the BNC with a hex nut and spring
washer. Torque to 21 -in-lbs.
9. Install W5 in the SYMBOL SYNC hole. Attach it to the BNC with a hex nut and spring washer.
Torque to 21 in-lbs.
Install the Option UN9 (UN8 + UN9) board assemblies
Refer to Figure 5 for the following procedure.
1. Insert the A8 generator/8M assembly into the motherboard connector A14J4.
2. Insert the A7 real-time baseband generator assembly into the motherboard connector A14J3.
3. Connect W3 from DATA to A14P5.
4. Connect W4 from DATA CLOCK to A14P6.
5. Connect W5 from SYMBOL SYNC to A14P7.
6. Connect W18 from the A17 rear-panel interface board assembly to the A8P2 and A17 ribbon cable
interconnect.
7. Connect W17 from the A7P405 to the rear-panel I OUT.
8. Connect W16 from the A7P404 to rear-panel Q OUT.
9. Connect W15 from the A7P403 to rear-panel BASEBAND GENREF IN.
10. Connect W19 from A7P300 to A8P3.
