Crown PIP-RPA Reference Manual page 14

Fig. 3.16 Remote Control & Tie Function Wiring
If variable controls aren't required, the
10-V output can be connected di-
rectly to the remote control input for
no attenuation, or a resistor can be
used for a fixed attenuation level. The
table in Figure 3.15 shows how much
attenuation is achieved with different
remote-control resistance values. The
corresponding voltage is also pro-
vided. The input can also be easily
switched on or off if a switch or relay
is added to the remote control input.
A resistance of greater than 10 K
ohms or a remote input voltage of
less than +5V is not recommended.
If a remote control wire is opened or
shorted to ground, the control will
default to maximum attenuation.
3.7 The Tie Input
The Tie function is provided to "tie" the
audio signal and input priorities of
Channel 1 and 2 together. This en-
ables all four inputs to be mixed into
Page 14
Note: The 10 V out-
put can also be wired
directly to the remote
inputs to turn them
on with no attenua-
tion.
one or both channels of the amplifier.
Whenever the Tie function is enabled,
the audio from Input A is automati-
cally connected to Channel 2. The
routing/priority DIP switch also af-
fects the Tie function. The tables in
Figure 3.3 and 3.4 show how the
audio from each input and their re-
spective priorities are controlled by
the routing/priority switch when the
Tie function is on.
The Tie function is controlled by a
TTL logic level circuit and is de-
signed to be controlled remotely. It is
turned on when 4.2 V or more is
detected at the Tie input connector
on the front panel of the PIP Simply
connect a switch between the 10-V
output and the Tie input as shown in
Figure 3.16 to control it. If desired,
the Tie func-tion can be permanently
enabled by placing a jumper across
the 10-V output and Tie input in place
of the switch.
P.I.P.-RPA
Reference Manual