The RXTE and Swift observations on the 2009 outburst from a newly discovered transient and black-hole candidate XTE J1652 - 453 are analyzed .
The source was observed by RXTE to behave a sequence of spectral states that are typical to the black hole XRBs .
During the first 7 observations , the source is diagnosed to stay in a high/soft state , from the spectrum dominated by soft thermal component which contributes an average of \sim 85 \% to the X-ray flux at 2–20keV , and from the hardness \sim 0.1 showing up in the hardness-intensity diagram ( HID ) .
For the last 20 observations the spectral state is classified as low/hard according to an average hardness of \sim 0.8 and a balance between the thermal and the non-thermal components : a power-law component takes \geq 80 \% of total 2–20keV flux .
Located in between is an intermediate state that the source might have experienced .
The usual relationship between rms and hardness presents in HRD as well .
Throughout the outburst no QPOs are found in XTE J1652 - 453 .