Chapter 2 91
Block Diagrams
Mnemonics and Connectors
PROBE_P15 Probe power +15 V power supply from the fan control board to the front panel interface board
PS_FREQ Power supply clock frequency from analog IF board to the power supply
PS_OFF_L Power supply on/off control signal from the fan control board to the power supply
RANGE IF range signal from the analog IF board to the digital IF board
REF_CK Serial bus clock signal from the serial bus bridge on the daughterboard to the reference board
REF_DATA Serial bus data signal from the serial bus bridge on the daughterboard to the reference board
REF_EN Serial bus enable signal from the serial bus bridge on the daughterboard to the reference board
REMOTE_ON_L
RF_CK Serial bus clock signal from the serial bus bridge on the daughterboard to the RF board
RF_DATA Serial bus data signal from the serial bus bridge on the daughterboard to the RF board
RF_EN Serial bus enable signal from the serial bus bridge on the daughterboard to the RF board
SCLK Motherboard serial bus clock signal from the digital IF board to the all vertical boards
SR_H Differential ECL sample rate clock from the analog IF board to the digital IF board
SR_L Differential ECL sample rate clock from the analog IF board to the digital IF board
SWEEP_ARM Sweep arm signal from the analog IF board to the digital IF board
SWEEP_TRIG Sweep trigger signal from the analog IF board to the digital IF board
SW_IN_L Power switch signal from the front panel power switch to the fan control board
SYNTH_CK Serial bus clock signal from the serial bus bridge on the daughterboard to the synthesizer board
SYNTH_DATA Serial bus data signal from the serial bus bridge on the daughterboard to the synthesizer board
SYNTH_EN Serial bus enable signal from the serial bus bridge on the daughterboard to the synthesizer board
TRIG1 Trigger #1 output from the digital IF board to all vertical boards
TRIG2 Trigger #2 output from the digital IF board to all vertical boards
VCC +5.2 V digital power supply
VDL +3.4 V digital power supply
VFAN+ Cooling fans positive power supply from the fan control board to the fan connectors on the
motherboard
VFAN- Cooling fans negative power supply from the fan control board to the fan connectors on the
motherboard
Table 2-1 Mnemonic Descriptions
Mnemonic Description
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