Veris Technologies VIS_NIR Spectrophotometer - Operating Instructions - Manual (Page 73)

Pub# OM17-NIR Shank
5-20
Procedure #6 - Checking Spectrometer Input Voltage and Hamamatsu Voltage
Figure 21
Connect negative lead from
voltmeter here (brown wire)
Connect the positive
lead from the voltmeter
here (white wire)
Voltage should read 5V, as
long as spectrometer case is
within temperature range.