User's Manual

3300-Watt VHF Low Band Transmitter Chapter 2, System Description,
Maintenance & Remote Control Connections
335B, Rev. 0 2-5
2.2.1 VHF Exciter Tray (A4)
Table 2-2. VHF Exciter Tray Meters
METER FUNCTION
This meter reads power in terms of a percentage of the calibrated
output power level on the upper scale. The voltage level or
frequency level is read on one of the bottom two scales. A full-
scale reading on the top scale is 120%. 100% is equivalent to the
full-rated 3300 watts peak of sync visual. The meter also reads %
Aural Power, % Exciter Power, % Reflected Power, audio levels,
video levels, and the ALC reading.
With Switch S3 in Position Display
Switch S3, Meter
Selects the desired ALC voltage
reading, % Exciter Power,
% Reflected Power, % Visual
Power, % Aural Power, video
level, or audio level.
Audio
(0 to 100 kHz)
Reads the audio level, ±25 kHz
balanced or ±75 kH composite,
on the 0 to 10 scale. Will indicate
baseband audio, if it is connected
to the transmitter, even with the
(optional) video + 4.5-MHz SCA
input selected.
ALC
(0 to 10 volts)
Reads the ALC voltage level,
.8 VDC, on the 0 to 10 scale.
% Exciter
(0 to 120)
Reads the % Exciter Output
Power Level needed to attain
100% output of the transmitter
on the top scale.
% Aural Power
(0 to 120)
Reads the % Aural Output Power
of the transmitter,
100% = 330 watts at 10 dB A/V
ratio, on the top scale.
% Visual Power
(0 to 120)
Reads the % Visual Output Power
of the transmitter,
100% = 3300 watts peak of sync,
on the top scale.
% Reflected
(0 to 120)
Reads the % Reflected Output
Power, <5%, on the top scale.
Meter (A4-A18)
Video
(0 to 1 volt)
Reads the video level, at white,
on the bottom 0 to 10 scale.