# Power Supply Requirements - DMT132

## DMT132 User Guide

Document code
M211289EN
Revision
B
Language
English (United States)
Product
DMT132
Document type
User guide

The DMT132 transmitters are designed to operate with a supply voltage of 10 ... 28 VDC. The allowed voltage range depends on the loop resistance (RL):

• For RL 0 ... 100 Ω, supply voltage range is 10 ... 20 VDC
• For RL 0 ... 500 Ω, supply voltage range is 20 ... 28 VDC
 Maximum allowed RL is 600 Ω, as long as the following equation applies: ${\mathrm{U}}_{\mathrm{min}}=\frac{{\mathrm{R}}_{\mathrm{L}}}{40}+7.5\vee$ When RL = 600 Ω, supply voltage range is 22.5 ... 28 VDC.
 The DMT132 can be powered by the MI70 indicator or the USB service cable. You can plug in the MI70 indicator or the USB service cable while the transmitter is powered from connector I.