Micromod RetroPAK: MOD 30 Installation Manual - Manual (Page 11)

MOD 30ML Replacement for MOD 30 Instruments
PRODUCT DESCRIPTION
1.4 I/O MODULES
The descriptions included in this section give a brief overview of the functions and
features of the I/O modules which can be used in a replacement instrument..
1.4.1 2001A Voltage Input Module
The voltage input module provides dual ranges of ±10V dc and ±100 mV dc. The 10V
dc range can be selected and scaled for 1 to 5 V dc by configuration to match the input of
MOD 30 instruments. Input to the module is scaled and then applied to an integrating
analog to digital converter. Line cycle integration can be performed at integrals of either 50
or 60 Hz line frequencies to reject any line frequency noise. Transformer isolation from
the +5 volt supply is used to derive all the internal voltages to run the isolated front end.
Optical isolation is used to transfer the information from the A/D converter serially to the
microprocessor. The microprocessor takes the raw A/D voltage, compares it to the
reference, and then presents it to the host as requested over the serial communications
bus. This module uses the Voltage/Current Input Module (VCIM) Block for configuration of
input parameters. The default configuration of this block provides the 1 to 5 V dc input
range.
VCIM
Catalog Number Description for 2001A
BASE NUMBER
2001A Voltage Input Module
UNUSED Z Unused Character
ELECTRICAL CODE 10 General Purpose, Kent-Taylor standard
6
7
3
4
5
2
1
INPUT RANGE 10 ±100 mV or ±10 Vdc
ISOLATION 1 Isolated
MODEL A Design Level
Sample Number 2001AZ10101A
7