ORTEC 142IH, Руководство по эксплуатации и обслуживанию

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Fig. 4.1. Simplified Block Diagram of the 142IH Preamplifier.
4. OPERATION
4.1. GENERAL
When the 142IH is installed according to the
appropriate information in Section 3, it operates at
all times when power is applied from the power
source. The power is furnished from either the bin
and power supply through a mating amplifier or
from an ORTEC 114 Preamplifier Power Supply.
Figure 4.1 is a simplified block diagram of the
circuits in the 142IH Preamplifier. The complete
circuit is shown in schematic 142IH-0201-S1,
included at the back of the manual. When the
protection circuit is in, the diode clamp to ground
from a point in the input circuit will protect the input
FET transistor from large transients, which are not
a part of the input pulse information. When the
protection circuit is out, there is no clamp to ground
and a series input resistor is shorted by a jumper.