• Topic ID: id_23553909
  • Version: 2.0
  • Date: Sep 26, 2020 10:14:01 PM

Slipring Receiver Replacement (RT)

Prerequisites

Procedure

  1. Move table to its lowest elevation.
  2. Remove rear gantry cover Gantry Rear Cover Removal and Re-install.
    3. Notice Image
    • notice
    • Always turn OFF the HVDC before the 120 VAC. Turning OFF 120 VAC power before HVDC power can result in equipment damage.
  3. Turn OFF all 3 switches (Axial Drive, HVDC, 120VAC) on the Service Switch Panel and follow Lockout/Tagout procedures.
  4. Remove J1 and J2 cables.
  5. Remove hex screws holding the receiver to the antenna.

    Figure 1. Slipring Receiver

  6. Replace receiver only with a 5.x RT receiver. Receiver should be labeled as specific to RT (or Stargate) systems.
  7. Verify antenna gap and alignment adjustments, S-A HSDCD Slip Ring Adjustments

Finalization

  1. Hardware Reset
  2. Acquire 10 scouts: (120kV/40mA, 1000mm table movement)
  3. Acquire 100 axials: (120kV/80mA, 0.5 sec. Scan)
  4. Acquire 1 helical: (120kV/40mA, 30 sec. Scan),
  5. Acquire 10 axial scans: (120kV/400mA, 4 sec. Scan)
  6. Verify NO increase in corrected or uncorrected FEC errors.