Thermo Scientific SAM12, Manual

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Technical Description - Circuitry Issue: 1.0
7-6 SAM12 User Manual Thermo Fisher Scientific
The board has six connectors.
Coincident inputs are on BNC connectors “IN” 1-6.
X15 & X16
: These connectors provide power supplies to the
board and RS485 terminations:
X15 & X16 SIGNAL
1 EARTH
2 0V
3 RX-
4 TX-
5 Signal
Ground
6 TX+
7 +5V
8
RX+
9 +5V
Mains Power Supply Module
The mains power supply is a proprietary high-frequency
switched mode 50 Watt converter. The power module can
accept a mains input of 85 V to 264 V, 47 Hz to 63 Hz, the
output is between 12 and 15 V at 3.5 A. The actual output
voltage is controlled by the 5660A.
The power supply is capable of charging the battery at a
maximum rate of 3.3 A, up to +40°C. This module contains
AC Mains and dangerous DC switching voltages. It should not
be operated with the protective cover removed or the mains
ground (earth) conductor disconnected. It is not user
serviceable and should be returned to Thermo Fisher’s Service
department for repair.
LCD Display and Controller I/F & Backlight
Inverter Module
The LCD module is fitted with an integral Cold Cathode
Fluorescent (CCFL) back-light. The back-light is driven from a
proprietary inverter, mounted in a small screened box within
the display. The inverter generates dangerous high voltages
and RF interference frequencies and should not be operated
outside the box or with the display lid removed.
The LCD is controlled via a proprietary serial interface device
also mounted in a small screened box within the display.
Coincidence Detector
connections