Emerson 2130 RBM Consultant Pro, Reference Manual

Page: 26 / 394

2-6 Setting Up and Using Laser Alignment Fixtures
The sensor head with the laser source on top is the Master head (known as head
“A”). The other head is the Slave (known as head “B”). The model number is listed
on the back of each head. They can be identified by the letter A or B on the front.
There are no differences between the older and current versions of the 8215/8225
laser heads with the exception of the front panels and batteries. The older version
is powered by nickel cadmium (NiCad) batteries, while the current version is pow-
ered by Nickel Metal Hydride (NiMH) batteries.
The difference between the Model 8215 sensor heads and the 8225 sensor heads
are the target (Position Sensing Detector or PSD) size, laser distance, and the front
overlay. The 8215 sensor head has a 10mm x 10mm PSD and a laser which allows
alignments over a sensor spacing up to 30 feet, or 9 meters. The 8225 sensor head
has a 20mm x 20mm PSD and a laser which allows alignments over a sensor spacing
up to 100 feet (30.5 meters).
Although the direct-connect only laser system (Model 821501 and 822501) is not
illustrated in this manual, the only difference between it and the RF laser system
(Models 821500 and 822500) is that the RF system transmits information using
either the RF or direct-connect communication. The direct-connect only laser
system uses only the direct-connect communication. For this reason, the direct-con-
nect only laser systems do not have an RF antenna or antenna housing.