User's Manual

Table Of Contents
260-668066-003 Rev 002 October 2001 5-1
Chapter 5. Installing the IRU 600
Before installation and commissioning of the IRU 600 and companion
INU, its antenna, waveguide, and waveguide pressurization equipment
must be installed according to manufacturer’s instructions.
For compliance information, refer to Compliance and Notices.
For health and safety information, refer to Health and Safety.
For information on installing an INU, refer to Installing the INU and INUe.
For general guidance on installing antennas, waveguide and pressurization equipment,
see the Best Practices Guide from Aviat Networks.
IRU 600 Installation Procedure
This procedure applies to IRU 600 (V1) and IRU 600v2.
1. Fit the rack mounting brackets onto the chassis.
Brackets can be mounted in either a forward mount or a flush mount position.
Brackets can be mounted such that the grounding stud is to the left or right side.
2. Install the chassis. If installing multiple chassis, consider leaving a 3 RU space
between to allow for an expansion or extension kit(s).
3. Locate and secure RFU(s) and ACU in the chassis.
4. Connect the RFU(s) to the ACU using the supplied RF cables. Refer to the cabling
diagram on the rear side of the ACU front panel. The lower RFU is A-side, the top
B-side. A-side is the default online RFU in a 1+1 protected pairing.
5. For the IRU 600v2 with Tx coaxial switch, fit the RFUv2-to-switch cable assembly.
Ensure cables connect to the correct RFU. Refer to the cabling diagram on the rear
side of the ACU front cover.
Ensure DIN5 RFU cable connectors are correctly inserted and locked using the
connector locking ring - turn the ring clockwise until clicked into its locked
position.
Ensure the switch connector is held secure using its screw fasteners.
The Tx switch cable must remain securely connected at all times. Incorrect
communication between the RFU and Tx switch may result in mismatched A-side
and B-side operation and loss of standby.
6. Connect the RFU(s) to the INU/INUe RAC 60 or RAC 6X card(s) using the supplied
IF cable(s). The minimum bend radius of the IF cable is 25mm.