FV/FM, FV/FO Test

Saturation intensity:

600- 6000 μmols set from 10% to 100%

Saturation light source:

Array of red LEDs 660 nm.

Modulated light source:

Red 0.2 to 1.0 μmols.

Detection method:

Pulse modulated

Detector and Filter:

Pin photodiode with 700-750 nm band pass filter

Test duration:

0.1 seconds to 1.5 seconds. The default saturation pulse duration is set at 1.0 second; however, the software takes a rolling eight point 25 ms average to determine FO, and FM, making it idea for both algae and land plants.

Modulated light adjustment:

Manual adjustment from 30% to 80%

Parameters measured and graphed:

FO, FM, FV/FM, FV/FO

JIP Test

Actinic light intensities:

6000 μmols, 4500 μmols, 3500 μmols, 3000 μmols, 2500 μmols, 1000 μmols, 875 μmols, 525 μmols. An array of red LEDs at 650 nm are used for actinic illumination.

Detection method:

Pin photodiode detector with 700-750 nm band pass filter using red pulse modulated light, and variable sampling rate from 10 us to seconds.

Test duration:

JIP test 3 - 300 seconds

JIP Test parameters measured:

Direct readout parameters: O, t100μs, t300μs (or K), t2ms (or J), t30ms (or I), P, tFM, A (area above the curve), MO (or RC/ABS), PIABS (or performance index) FO, FM, FV/FM, FV/FO. Up to 32 OJIP traces can be overlaid and displayed on the graphic display screen, Colors on the screen start to repeat after 16 traces. FO is measured not estimated.

Measured parameters reported to the data file: ABS/RC, TRO/RC, DIO/CS, ETO/RC, TRO/ABS, ETO/TRO, ETO/CS, RC/CSO, RC/CSM, S, M, T are also measured and recorded in the data file, but not on the measuring screen.

Up to 32 traces can be overlaid on the graphic display screen, and up to 32 traces, per file name, can be stored for graphic overlay of traces in a single data file. Colors start to repeat on the viewing screen after 16 traces are overlaid. This limitation does not exist in the data file. If traces are not stored, thousands of measurement parameter sets can be stored in a single data file for spider graphing. The number of data files are only limited by machine memory limits.

General

Display:

Color Graphic Display

Storage Capacity:

Up to 160,000 measurements. Up to 32 traces can be stored with one data file name. Hundreds of traces can be stored in multiple data files, with different names.

Digital output:

USB port

Battery:

NiMH battery pack with a battery life of 8 hours between charges.

Dimensions:

18 cm, 7 cm, 6 cm.

Weight:

1.25 lbs., with carrying case and accessories - 4 lbs.

Carrying case:

Included.

Case dimensions: 36 cm, 28 cm, 15 cm.