Startup Surge Current - TMD62 - HMD62 - HMD60

HMD62 TMD62 User Guide

Document code
M212016EN
Revision
C
Language
English (United States)
Product
TMD62
HMD62
HMD60
Document type
User guide

When the transmitter powers up, the startup surge current may rise up to 120 mA. If you are connecting the transmitter to a system that uses a current limiting function, this can cause a startup issue that prevents the transmitter from powering up.

To resolve a startup issue caused by current limiting, try one of the following options:
  1. Adjust the current limiting function of the system to which you are connecting the transmitter so that it can accommodate the startup surge current.
  2. Add an extra load resistor between the +RH terminal and the power supply. The value of the serial resistor must be calculated based on the supply voltage and shunt resistance value.