Harris Ranger Series, Commissioning Manual

Page: 33 / 162

12/24/07 888-2685-001 2-7
WARNING: Disconnect primary power prior to servicing.
Section 2 Installation Verification &
Ranger Commissioning Manual
2.6 Signal and Ground Connections
NOTE:
Control and signal wires should never be run in the same conduit with any AC
wiring. A separate conduit should be used for control/signal cables.
Confirm that the ASI input is connected to
the terminal (may be labeled SMPTE 310M
as seen in the photo). There are 2 bulkhead
BNC connectors located just inside the back
door at the top of the cabinet as shown to the
right.
NOTE:
Note that the 10Mhz reference is
optional.
Verify that a ground strap is connected from the transmitter cabinet to the station
ground. There is a brass ground block located on top of the cabinet or a strap coming
out the back of the cabinet (only one should be used). For connection to the top of the
cabinet, remove the block, punch holes in the copper ground strap and then mount the
strap under the block. The loose strap at the bottom of the cabinet should be soldered to
the station ground strap. The copper strap must be at least 2" wide.
2.7 Interlock Connections
There are 2 types of interlock connections for the Ranger:
•
External Interlock which shuts the transmitter off and requires the user to
give an ON command (local or remote) to turn the transmitter back on. Used
for protection of personnel and equipment. For more information see "2.7.1
External Interlocks" on page 2-8.
•
RF Mute Interlock which only mutes the rf drive and therefore reduces the
transmitter power output to zero. This interlock is meant to be used for a
motorized RF switch or possibly a dummy load thermal interlock.
NOTE:
To operate the transmitter without any interlock connections requires 3 jumpers:
•
J18-1 to J18-8 (defeats the External Interlocks)
•
J18-9 to J18-12 (defeats the RF Mute Interlocks)
•
J14-1 to J14-3 (defeats the RF Switch Status feedback interlock)