Motorola R-2001A, Руководство по обслуживанию

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Table 4-1. Controls, Indicators, and Connectors (Cont)
Item Description Function
Eleven position switch RF Scan (Hz/Sec)
switch
POWER switch Three-position toggle
switch.
Batt indicator
AC indicator
LED (red)
LED (red)
Oven Ready indicator LED (red)
DISPLAY indicators Twelve LEDs (red)
Allows automatic scan of the generated or the
monitored frequency. The switch setting indicates
rate of frequency change. The rate is 5 steps per
second, with frequency steps of 100 Hz,
1 kHz, 10 kHz, 100 kHz and 1 MHz.
a. Energizes all circuitry in the On position.
b. At Standby position, removes DC from all
circuitry except the frequency standard and
battery charger.
c. At Off, only the battery charging circuitry is
operative if an ac power source is being
used.
Illuminates when equipment is using DC power.
Illuminates when equipment is connected to an ac
power source. Position of POWER switch has no
effect on indicator. Equipment automatically
switches to ac power source when connected to
ac line voltage.
Illuminates when optional frequency standard
oven has stabilized. Continuously illuminated with
the TCXO frequency standard.
Illuminate one at a time to indicate the function or
type of operation the equipment is performing
and the information displayed on the CRT.
a. Gen/Mon Mtr — In the generate mode the
center frequency, output power, and modula-
tion depth of the RF output is displayed. In
the monitor mode the center frequency,
input power, frequency error, and modula-
tion depth of the received carrier is
displayed.
b. Modulation — The modulation audio in the
generate mode or the demodulated audio in
the monitor mode is displayed.
c. Spect Analyzer — The spectrum analyzer
mode is enabled. The RF spectrum and the
operating center frequency is displayed.
4-4