Studio Technologies 92 - Manual (Page 18)

Issue 1, December 2006 Model 92 User Guide
Page 18 Studio Technologies, Inc.
Master/Slave Cable Testing
Once the data link has been established
between the two Model 92 units testing
operation can begin. Start from the condi-
tion of having both units in their powered
down state. Then review the desired testing
scenario, knowing exactly which cable as-
sembly is going to be tested first. Designate
one of the Model 92s as the master unit.
There’s no requirement as to which unit is
the master and which unit is the slave. Typi-
cally the Model 92 that’s most conveniently
accessible should be the master unit. For
example, when testing DT12s in a stadium,
it probably makes sense to have the master
situated in the truck dock or main wiring lo-
cation. Then the slave unit can move among
the destination locations such as the broad-
cast booth, side of the field, etc.
Now activate power to the unit that has
been designated as master. Ignore the sta-
tus of the data link active LED and whether
or not the slave unit powers up. Before
these issues come into play a couple of oth-
er things must first be accounted for. On the
master unit, set the cable mode to match
the type of cable to be tested. If, for ex-
ample, the cable to be tested has FK37-type
connectors on each end select the cable
mode as FK37 to FK37. Another example
would be if the cable to be tested has an
FK37 female on one end that “breaks out”
into twelve XLR males on the other end.
This would necessitate setting the master
unit’s cable mode to FK37-F to XLR-M.
The final step is to set the master unit’s
system mode. This is a little tricky to un-
derstand but we’ll work through it! Begin
by confirming the exact type of connector
that is to be connected to the master unit.
For example, while the cable mode might
be set for FK37 to FK37, there’s no require-
ment as to which connector end, male or
female, is physically located near the Model
92 that’s been designated as master. For
our example let’s specify that an FK37 male
connector is on the end of the cable that’s
to be attached to the master Model 92 unit.
To meet the needs of this situation, set the
master unit’s system mode for Master-
Female Active. This is accomplished by
pressing and holding the power on/off
button until the desired system mode is
enabled.
At this point the master unit is configured
to perform the required cable test. To
review, the cable mode has been set to
match the type of cable to be tested and the
system mode has been selected to activate
the connector type required for the test
environment.
Once configured to the desired system
mode, the master Model 92 should have
caused the slave Model 92 to power up.
The master/slave data active LEDs on both
units should indicate that data is passing
back and forth. The slave Model 92 should
have its system mode LED indicating that
slave mode is active. The auto test and
manual channel select (up and down) but-
tons on the master unit perform the same
functions as if the local system mode was
selected. On the slave unit the auto test and
manual channel select buttons are disabled.
The power on/off button on the slave unit
remains active but isn’t generally utilized
during master/slave operation.
Connect the cable to be tested to the mas-
ter and slave Model 92 units. In the example
covered a few paragraphs previously, an
FK37 male would be connected to the
master Model 92. An FK37 female would
be connected to the slave Model 92. Test-
ing functions can only be controlled by the
master Model 92. However, the test results