2-18 888-2595-001 12/20/11
WARNING: Disconnect primary power prior to servicing.
Section 2 Installation
ZX Series
When special cables (non-straight-through) are provided, a separate schematic is
provided in the accompanying drawing package to aid in signal tracing during
troubleshooting. When no schematic is provided, it is generally safe to assume that the
cable in question is straight-through. (same pinout both ends)
When an exciter is not supplied at the time of purchase, the customer is responsible for
fashioning a cable to comply with the minimum requirement that pin 4 always be
grounded at the transmitter end to signal a permanent FM mode, and that pins 1 and 9
send the Mute command to the exciter. The exciter must also be internally configured to
mute its RF output when a ground potential is NOT present at pin 9 relative to ground
(pin 1). Consult the exciter manual for more information.
Table 2-4 EXCITER INTERFACE (D-sub 15, amplfier rear)
Designation Remarks Pin
GND Signal ground 1
EXCITER
FORWARD POWER
SAMPLE
Exciter forward power reading
for (optional) web remote
(0-4V linear scale)
2 Input
N/C No connection 3 n/a
FM_ON_STATUS Exciter grounds pin to tell PA
that drive signal has main FM
carrier (continuous closure).
NOTE - FlexStar HDx-FM or
BoostPro
4 Input
HD_ON_STATUS Exciter grounds pin to tell PA
that drive signal has HD
carriers (continuous closure).
NOTE - FlexStar HDx-FM or
BoostPro
5 Input
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