Turbo Controller Pcb; Front Panel Controller Pcb - Agilent Technologies VS Series Operation Manual

Filament power supply section with the emission tuning and good emission (EMI-
OK) signals generation
Isolated digital control section
Power supply section with 3-pin connector (J1)
A.2.4 Turbo Controller PCB
Turbo V81 Controller PCB circuitry provides:
RS-232 communication with the CPU PCB via the Motherboard PCB
Local microprocessor-controlled 24 VDC-to- frequency conversion with auto-
diagnostic (voltage, current and temperature control) and auto-protection (over
current and temperature) functionality for turbo pump
3-phase variable output voltage, current and frequency control respect to the speed
reached by the turbo pump
+24 VDC to +5 VDC, +15 VDC, +12 VDC and +VP (~50 VDC) conversion
A.2.5 Front Panel Controller PCB
The Front Panel PCB (Agilent P/N R2117501) functions as liaison between an operator and
VS Series leak detector via an LCD display.
The Front panel PCB circuitry provides:
± 50 V isolated RS-232 interface with the CPU PCB via the Motherboard PCB
Non-isolated RS-232 interface with a Wireless Base PCB
Microprocessor (CPU) control of the two UART, color TFT- LCD Display, Touch and
Front Panels, LCD brightness and audio volume, PWM output for an audio circuitry,
USB device functionality and temperature control
Power amplification for the audio control
CPLD control signal generation
24 VDC to +3.3 VDC, +12 VDC and +1.8 VDC conversion
24 VDC to 600 VAC conversion for a CCFL backlight of the LCD display
The Front Panel Controller PCB circuitry resides on a stand-alone PCB comprised of nine
sections:
CPU and memory (SDRAM and Flash) section
Isolated I/O RS-232 interface section (UART1) with a RJ45-8x8 connector (J303)
Non-isolated I/O RS-232 interface section (UART2) with a DB9 female connector
(P300)
USB device section with a USB B-type connector (J302)
A-6
VS Series Component Leak Detector