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ViltMAU.,
SECTION 2. CONTROLS AND WAHT THEY DO
2-1 FRONT PANEL (see Figure 1)
Figure 1. Front Panel Controls
1.
Digital Frequency Display
Six digit 7-segment light-emitting diodes
(LEDs) illuminate input frequencies in digital
way. The leftmost two digits are in units of
MHz, the succeeding three digits of kHz, and
the rightmost digit of 100Hz. These are
sectioned by two points. If the VFO or
heterodyne local oscillator signal is discon-
nected with the DISPLAY-COUNTER selector
in the DISPLAY position, the LEDs but the
points go off ("blanking"). This shows a
defect of the signal connection cable(s).
2.
DISPLAY-COUNTER Selector
DISPLAY position: The DG-5 displays the
TS-520S operating frequencies.
COUNTER position: The DG-5 operates as
frequency counter, having DC power
supplied from the TS-520S. To input a
given signal, connect to the COUNT.
IN connector on the rear panel.
3.
DH (Display Hold)•Switch
Used to hold the input channel frequency dis-
played as the time right before pressed in
"ON". The frequency display will not change
irrespective of the operation mode and
frequency changes of the TS-520S. This is
convenient to see other channels and to return
to the original channel as the DG-5 serves as
a frequency memory.
4, DH Indicator
The DH indicator lights and shows the "DH"
state when the DH switch is in ON.
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