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031-295-B0-001, Rev. B (11/2018)
2.6.3 Connecting the Service Power Inserter-RF (SPI-RF)
The SPI-RF (Alpha p/n 021-080-20 for the XM2, XM3) (Alpha p/n 021-080-21 for the XM2-300HP) can be mounted in
either of the two locations as shown below.
Tools required:
• Hammer
• Punch
• 1" wrench
Installation Procedure:
1. Use the hammer and punch to remove the 3/4" knockout from either the right side (as viewed from the front) or
the right rear corner of the enclosure.
2. Use a 1" wrench to remove the output port fitting from the SPI-RF.
3. Position the SPI-RF inside the enclosure and fix in place by reattaching the output port fitting to the body of the
SPI-RF.
4. Disconnect the SPI-RF from all power sources.
5. Remove the access port cover, exposing the circuit board and seizure screw assembly.
6. Loosen the seizure screw.
7. Screw the Coaxial Termination into Output Port at the rear of the SPI-RF, inserting the stinger into the seizure
screw assembly.
8. Tighten seizure screw to 35 in-lbs.
9. Replace access port cover and reinstall screws.
10. Verify switch on top of SPI-RF is on the ON position.
Fig. 2-13, Mounting locations for the SPI-RF
2.0 Installation, continued
Output Port Fitting
Output Port Fitting
Access Ports
