Signal Processing Module - Toshiba GRT100 Series Instruction Manual

3.1.3

Signal Processing Module

As shown in Figure 3.1.5, the signal processing module (SPM) consists of an analogue filter,
multiplexer, analogue to digital (A/D) converter and main processing units (MPU) and executes
all kinds of processing such as protection, measurement, recording and display.
The analogue filter performs low-pass filtering for the corresponding current and voltage signals.
The A/D converter has a resolution of 16 bits and samples input signals at sampling frequencies
of 2400 Hz (at 50 Hz) and 2880 Hz (at 60 Hz).
Analogue filter
Analogue filter
Analogue
input
Analogue filter
A/D
Multiplexer
converter
Figure 3.1.5 Signal Processing Module
 49 
RAM ROM
Other
MPU
modules
6 F 2 S 0 7 8 9