WARNING
CAUTION
TM 5-6630-215-12
nanometers (nm), with an accuracy of + or - 2.5 nm and a bandpass of
less than 17 nm.
An individual filter of very high light wavelength
for measuring suspended solids in water is also included on the filter
wedge.
a.
Spectrophotometer - Operation.
(1) Controls and Indicators.
See figure 2-11 and table 2-6 for
location and description of each control aid indicator.
When operating with 110/120-volt power sources,
make sure that source and equipment are in ground
potential.
(2) Power.
The spectrophotometer may be operated on 110/120 volt
AC of DC battery power.
A battery pack holder for eight D-size dry
cell batteries is included as standard equipment and is located in the
bottom of the case.
A line voltage plug for 110/120 volt operation is
supplied with each instrument.
The instruments normally have the 110-
volt plug installed on the power supply board.
Insure that the power cell connections are correct
for the desired voltage prior to connecting to
power source.
Before removing the faceplate turn wedge to
position “F” to avoid interference and possible
damage to the color filters.
(a) Before attempting to operate the spectrophotometer, a
visual check should be made to ensure that the power cable connections
are correct for the desired voltage mode of operation.
To check,
adjust the wavelength dial to the lowest setting, loosen the two
captive screws on the front panel,
and remove the spectrophotometer
panel from its case to view the underside.
(b) Verify that the proper connections are made. For AC oper-
ation, the cable originating at the case receptacle must be connected
to the power supply circuit board.
A second AC power cable, origina-
ting at the power supply circuit board and marked HC5, must be connec-
ted to the amplifier circuit board at BC5.
Verify that the proper
line voltage plug is connected on the power supply board.
The plugs
are stamped 115 v or 220 v.
Line voltage plugs are for 115 or 220
volt operation are supplied with each instrument.
2-32
Change 1
