Telonics PA-4200 Power Amplifier
3
PB008674 Rev F
PA-4200
S
TERE
P
WER
A
MP
C
NTR L
F
UNCTI NS
,
J
ACKS
,
&
I
NDICAT RS
:
F
R NT
P
ANEL
A Power Switch
This is the main power switch for the system. This switch also controls the
A receptacle on the rear panel, the 24 VD output for the Telonics preamps
(rear panel), and the 24 VD output for FP-100 Foot Pedal (front panel).
Eliminates the need for a power strip in 3U rack systems.
Blue LED The blue LED will indicate that the main power is turned on.
Standby Switch
This switch allows control of the A power to the power amp alone,
independent of the system power. When placed in the Standby mode it
allows for quicker cool down of the amplifier if needed. This switch must be
on in normal use as it effectively “mutes” the power amplifier section in the
off position.
Thermal
Management
Status
The Thermal Management Status indicates the temperature status of the
power amplifier. The LEDs indicate a low (green), medium (yellow), or
high (red) temperature range.
The LEDs will also indicate a fan speed out of specification condition as
described later, in the Thermal Management System; Fan Speed out of Spec
Indication paragraph.
Green LED
The green LED will blink; on for a short time then off, once a second while
the temperature is below the Low setting. This “wink” (short blink, once per
second) lets you know that the Thermal Management System is working. As
the temperature increases the green LED will come on solid while the
temperature is at or above the low setting.
Yellow LED The yellow LED will come on solid if the temperature is at or above the
medium set point.
Red LED The red LED will come on solid if the temperature is at or above the high set
point.
R Input Level This is an input attenuator for the right audio channel. Fully clockwise will
allow maximum output from the amplifier.
L Input Level This is an input attenuator for the left audio channel. Fully clockwise will
allow maximum output from the amplifier.
LED Light Only This 1/4” jack powers up the optional LED light bar. CAUTION: NO
AUDIO CABLES SHOULD BE PLUGGED INTO THIS JACK.
24VD Output
This jack provides an isolated 24 volts D to power up the FP-100 foot
pedal. This jack accepts a special twist lock plug for a secure connection of
power to the pedal.
