IAR Debug ProbesI-jetTechnical specificationsIndicatorsIndicatorsIn this section: I-jet has three LED indicators on the top, marked TPWR, DBG, and USB. The following indicators and their statuses are described in detail:The TPWR indicator (Target power)The DBG indicator (JTAG/SWD)The USB indicatorThe TPWR indicator (Target power)Indicator statusDescriptionOffPower to target is not provided by I-jet.GreenPower to target is provided by I-jet.YellowWarning. Power to target is above 420 mA.RedError. Overcurrent limit (520 mA) detected and power to target was switched off for protection.Table 5. TPWR indicator statusesThe DBG indicator (JTAG/SWD)Indicator statusDescriptionOffvTref on JTAG header is too low.GreenvTref is at or above 1.8 V.Green blinkingIndicates JTAG/SWD communication activity.Table 6. DBG indicator statusesThe USB indicatorIndicator statusDescriptionOffNo USB power.Green steadyInitial state or no transfer.Green blinkingUSB transfers to or from I-jet.Red blinkingUSB enumeration.Red steadyUSB error, broken cable, or hardware defect. Inspect the cable and/or try a different USB port.Table 7. USB indicator statuses