Delta Electronics SS1-UM-1.05 - Manual (Page 68)

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Technical Reference section Document code: SS1-UM-1.05
“Insufficient power to write data” reported.
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Recharge the Ni-Cd battery pack, or replace it with a freshly charged Ni-Cd pack
or two AA Alkaline cells.
When transferring files to a PC, data is transferred, but there are repeated checksum or
device IO errors.
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Reboot your PC and start again. See the advice on RS232 communications in the
SunScan Tutorial (p28).
SunScan or BFS give inconsistent light readings.
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Make sure the diffusers are clean and that the desiccant condition indicators are
blue. See the advice on PAR calibration in Measurement Options (p49).