PASCO h/e Apparatus - Equipment and Setup; Equipment Required, Installation, and Checks

012-04049J h/e Apparatus and h/e Apparatus Accessory Kit
3
®
Equipment and Setup
Coupling Bar Assembly
Light Aperture
Assembly
Lens/Grating
Assembly
Support Base Assembly
Light Block (for
Light Source)
h/e Apparatus AP-9368
Mercury Vapor light
Source OS-9286
h/e Apparatus Accessory Kit AP-9369
Figure 3. h/e Equipment Identification
Equipment Required:
– Digital voltmeter (SE-9589)
– h/e Apparatus, (AP-9368*)
– h/e Apparatus Accessory Kit, (AP-9369*)
– Mercury Vapor Light Source, (OS- 9286*)
Installing the Batteries
The h/e Apparatus requires two 9-volt batteries (supplied
but not installed). The battery compartment is accessed by
loosening the thumbscrew on the rear end panel, and re-
moving the cover plate.
➤➤
➤➤
➤ NOTE: The h/e Apparatus can also be powered
using a ±9 V dual power supply. Just remove the
batteries and connect +9 V to the "+6 V MIN" bat-
tery test terminal and -9 V to the "-6 V MIN" bat-
tery test terminal.
Battery Voltage Check
Although the h/e Apparatus draws only a small amount of
current and batteries normally last a long time, it's a good
idea to check the output voltage before each use. Battery
test points are located on the side panel of the Apparatus
near the ON/OFF switch. Batteries functioning below the
recommended minimum operating level of 6 volts may
cause erroneous results in your experiments.
To check the batteries, use a voltmeter to measure be-
tween the OUTPUT ground terminal and each
BATTERY TEST terminal (-6V MIN and +6V MIN).
If either battery tests below its minimum rating, it should
be replaced before running experiments.
Figure 4. Battery Test Points
Battery Test
Terminals
Ground
Ter mi na l
ON/OFF
Switch
*These items may be purchased separately from PASCO
scientific, or together as an AP-9370 h/e System.
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