Setting Up the CH2 Tester 9
Before setting up the tester, select a test area where you can keep 2 feet (60 cm) between the
test system and noise emitting electronics.
Some examples of electrically noisy
devices include:
• CRT video monitors
• Florescent lights
• Equipment motors
Keep such devices at least 2 feet from the
test system, test fixturing, and
device-under-test. Otherwise, measurement
accuracy may be compromised.
Installing Add-on Scanners
Close together: Stacking the add-on scanners onto the base unit is the standard configuration. The
system is less susceptible to electrical noise in the environment, and therefore generally more accurate.
This configuration supports the supplied box-to box cable(s).
Spaced apart: The units can be spaced apart to allow for a shorter interface cable to the device-under-
test. For this type of configuration you must order custom box-to-box cables from Cirris. The maximum
total length of a box-to-box cable is 200 ft (60m).
1. Connect the box-to-box cable from
the OUT connector on the base unit
to the IN connector on the next unit.
You may also connect a box-to-box cable
from a BRANCH connector to the IN
connector of another unit.
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