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Next: Transition to Safe Mode Up: Nominal Procedures Previous: Nominal Switch On

   
Nominal Switch Off

N.B. High voltages must be ramped down slowly and safely before switching off main power

The ICU will be in ``idle'', ``science'', ``engineering'' or ``intermediate safe'' mode.

Description tc tm params VxWorks
Description tc tm params VxWorks
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Specify V cathode ramp parameters h7140   h510=``cathode'', h160=0, h175=``off'' tc_det_load_hv_ramp_params 1,0,25,0

Perform ramp

h5140     tc_det_start_hv_ramp

Wait up to 120s for event

  92100 h7000=``cathode ok''  

Specify Vmcp1 ramp parameters

h7140   h510=``mcp1'', h160=0, h175=``off'' tc_det_load_hv_ramp_params 2,0,25,0

Perform ramp

h5140     tc_det_start_hv_ramp

Wait up to 120s for event

  92100 h7000=``mcp1 ok''  

Specify Vmcp23 ramp parameters

h7140   h510=``mcp23, h160=0, h175=``off'' tc_det_load_hv_ramp_params 3,0,25,0

Perform ramp

h5140     tc_det_start_hv_ramp

Wait up to 120s for event

  92100 h7000=``mcp23 ok''  

Spacecraft command: Send an RBI suspend

      suspend
Spacecraft procedure: switch off +28V        


next up previous contents
Next: Transition to Safe Mode Up: Nominal Procedures Previous: Nominal Switch On

1998-12-23