horiba JOBIN YVON SYNAPSE, User Manual

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Detector System Component Description
51
Synapse Power Supply Unit
The Synapse power supply unit accepts universal AC single-phase input power over the
range of 85 to 264 VAC with an associated line frequency range of 47 to 63 Hz and
develops the necessary DC bias voltages required by the system to operate properly.
This compact and efficient unit is also responsible for generating the thermo-electric
power used by the detector head’s peltier in an effort to remove / isolate the detrimental
effects of this circuitry with respect to noise, power dissipation and heat from the overall
Synapse detector head assembly. In addition, the power supply unit has provisions to
incorporate an optional power shutter drive circuit for instances where an electro-
mechanical shutter will be required for the end-user’s application.
The power supply unit contains a fan to help cool the enclosed electronics and maintain
optimum system performance. Care should be taken to ensure that the ventilation slots on
power supply unit are free from obstruction in order to maintain an adequate level of air
flow for proper operation. In addition, the unit incorporates a dust cover to filter out
debris and air-borne particulate matter from the air intake path. Depending on the end-
user’s environment, it is recommended that the dust cover filter be periodically removed
and cleaned at a minimum of once every six months (procedures for removing and
cleaning the dust cover are found in the “General Maintenance” section of Chapter 2).
A brief description of the power supply unit’s functional circuit elements follow:
Integrated TE Power Supply
The power supply unit incorporates resident circuitry that provides clean, filtered
thermoelectric (TE) cooling power for use by the Synapse detector head. This TE cooling
circuitry monitors and regulates the detector array’s set point temperature with less than
±
0.1
°
C drift.
This versatile TE cooling circuitry eliminates the need for any additional external power
source requirements with respect to peltier cooling.
Integrated Power Shutter Drive Circuitry (optional)
The power supply unit incorporates an optional power shutter circuit capable of driving a
single electro-mechanical shutter with the following characteristics:
Coil resistance: 12 ohms
Pulsed voltage to open: +60 V DC
Hold voltage: +5 V DC
Operating frequency: 40 Hz maximum rep rate