Introduction
There are two differences between the IMASI03 modules and
the IMASI23 module, resolution/scan time and power consumption. Once these two factors are taken into consideration,
the IMASI23 module can be used as a direct replacement for
the IMASI03 module.
The IMASI03 module resolution for the analog to digital conversion for each independent channel can be set at 16, 18, 20,
22, and 24. For the IMASI23 module, the resolution for each
channel is 24 bits only.
User Differences
The only user differences between the IMASI23 and the
IMASI03 is the input configuration jumper blocks J1-J12.
Refer to Table C-1. The IMASI03 has two sets of 3 pin jumper
blocks, where the IMASI23 has 6 pin jumper blocks. Refer to
Figures C-1 and C-2.

Function Code 216 Modifications
The following change is required to function code 216 when
replacing an IMASI03 module with an IMASI23 module.
• Change specification S11 to 24 bit A/D conversion resolution.
Refer to Table 1-4 for typical analog to digital conversion rates.
The rate specified is the conversion time for all channels.
NOTE: If 16, 18, 20, or 22 bits resolution is already selected in function code
216, the IMASI23 module will automatically default to the 24 bit resolution. This
change is only necessary to insure the specifications accurately reflect the
module capabilities.
Power Consumption Comparison
IMASI03 module:
• 300 mA at +5 VDC
• 130 mA at +15 VDC
• 35 mA at -15 VDC
IMASI23 module:
• 500 mA at +5 VDC
In most instances, this small difference in power consumption
will not require any changes to the power supplies. To insure
this, be certain to check all of your calculations for power supply sizing and system current requirements and adjust as necessary for the IMASI23 power consumption specification.