#
#                   CB_Fan  PCB  Nets
#
#                   Front Panel  Nets
#                 ---------------------
#
#
#                                                 Original Rev. 21-Mar-2012
#                                              Most Recent Rev. 22-Apr-2012
#
#
#
#  This file holds the nets for the Front Panel Display LEDs.
#
#  The 4 front panel LEDs are:
#
#    - LED to show that Vdd +3.3V is present           green upper left
#    - LED to show that Vcc +5.0V is present           green upper right
#    - LED to show that the 40 MHz Clock is present    red lower left
#    - LED to show when Triggers are being issued      red lower right
#
#  This file also holds the nets for the U57 stretcher
#  circuit for the Clock and Trigger LEDs.
#
#  This file also has the nets for weakly grounding the
#  front panel of the card.
#


#  Start by connecting the Vcc and Vdd Power LEDs in component LED2

NET  'GROUND'     LED2-1   LED2-3      # Ground the cathodes of power LEDs

NET  'VDD'        R142-2               # Vdd for Vdd Power LED
NET  'P_LED_DD'   R142-1   LED2-2      # Anode of the Vdd Power LED

NET  'VCC'        R141-2               # Vcc for Vcc Power LED
NET  'P_LED_CC'   R141-1   LED2-4      # Anode of the Vcc Power LED



#  Clock Running LED and Stretcher

NET  'CLK_8_CMOS_ECL'  R143-2           # Source of 40 Mhz Clk for LED Monitor
NET  'ISO_CLK_TO_B'    R143-1   U57-2   # Isolated Clk to start the stretcher

NET  'GROUND'                   U57-1   # Unused Clk LED Stretcher inputs
NET  'VCC'                      U57-3   # Unused Clk LED Stretcher inputs

NET  'GROUND'          C141-2            U57-14   # Clk LED Stretcher  timing
NET  'RC_EXT_CLK'      C141-1   R145-2   U57-15   # Clk LED Stretcher  timing
NET  'VCC'                      R145-1            # Clk LED Stretcher  timing

NET  'CLK_STR_Q_B'     U57-4   R147-2   # Clk LED Stretcher  output

NET  'CLK_LED_CTH'     LED1-1  R147-1   # Clk LED
NET  'VCC'             LED1-2



#  Trigger Issued LED and Stretcher

NET  'TRIG_8_CMOS_ECL'  R144-2           # Source of Trig for LED Monitor
NET  'ISO_TRG_TO_B'     R144-1   U57-10  # Isolated TRG to start the stretcher

NET  'GROUND'                    U57-9   # Unused TRG LED Stretcher inputs
NET  'VCC'                       U57-11  # Unused TRG LED Stretcher inputs

NET  'GROUND'           C142-1            U57-6    # TRG LED Stretcher  timing
NET  'RC_EXT_TRG'       C142-2   R146-1   U57-7    # TRG LED Stretcher  timing
NET  'VCC'                       R146-2            # TRG LED Stretcher  timing

NET  'TRG_STR_Q_B'      U57-12  R148-2   # TRG LED Stretcher  output

NET  'TRG_LED_CTH'      LED1-3  R148-1   # TRG LED
NET  'VCC'              LED1-4



#  LED Stretcher Power, Ground, and ByPass Caps

NET  'VCC'      U57-16   C143-2   C144-2
NET  'GROUND'   U57-8    C143-1   C144-1



#  Weakly ground the front panel of the card.

NET  'GROUND'   R151-2   R152-2   R153-2

NET  'GA_GND_THREE'  R153-1   GA3-1    #  Upper mounting screw weak ground
NET  'GA_GND_TWO'    R152-1   GA2-1    # Middle mounting screw weak ground
NET  'GA_GND_ONE'    R151-1   GA1-1    #  Lower mounting screw weak ground