Yaxin-1161G chlorophyll fluorescence measuring system can measure the kinetic process of chlorophyll fluorescence. It combines the OJIP transients（rapid fluorescence kinetic）and Slow Chlorophyll a fluorescence kinetics measured techniques, greatly facilitates the study of chlorophyll fluorescence.

I. Instrument Functions

1.         Measurement function: Obtain the rapid fluorescence kinetic curve of OJIP (1 ~ 10 s); Obtaining a pulse transient fluorescence kinetic curve (1-10 minutes); The measured basic parameters are Fo, Fj, Fi, Fm (Fp), Fo', Fm', Fs, Ft and area;

2.         Calculation function: The quenching parameters φ ΦPSⅡ ⅱ, qN, qP(NPQ), Y(NO), y (npq); Parameters of photochemical efficiency: Fv/Fm, Fv'/Fm', Fq'/ Fm', Fv, Fv', FQ'; Quantum yield or energy distribution ratio: φPo, ψO, φEo, φ do; Performance index: PIABS, PICS, etc.

3.         Display function: Show a fast fluorescence kinetic curve (OJIP curve); Display pulse transient fluorescence kinetic curve;

4.         Data function: Data storage: built-in large-capacity data storage; Data deletion and transmission

5.         Help function: View simple help information on the screen

6.         Software functions: Firmware upgrade function; Upper computer software installation-free

Ⅱ. Technical Parameters

1.         1. Light source: LED blue: 470 nm; light intensity range: 0～5000 μmol m^-2 s^-1; Intensity and timing can be set; LED far-red light: 730 nm, exposure time: 0~20 seconds

2.         Data acquisition frequency: 5 μs each time

3.         Storage capacity:    can store 9999 full OJIP curves or 512 maximum measurement time (10 minutes) of the pulse transient fluorescence kinetics

4.         Data transmission: USB 2.0

5.         Displays: 320 × 240 dot matrix LCD, Chinese / English operation interfaces electable

6.         Power supply: AC power adapter DC 8.4 V 2 A; Rechargeable lithium battery: 8.4 V 7 Ah

7.         Weight: 1.0 kg

8.         Size: 20×13×15 cm

9.         Dark adaptation folder: For most of the leaves of the determination of a suitable location of a larger depth of the leaf leaf folder options