Modulating The Carrier; Generating A Test Tone - Ramsey Electronics COM3010 User Manual

2.06 Modulating the Carrier

The carrier frequency can be modulated with either amplitude modulation (AM) or frequency
modulation (FM). In AM mode it is possible to generate either a single tone or external
modulation; DCS and CTS are not enabled in AM modes. The following combinations are
possible in FM :
♦
No modulation
♦
Tone Only
♦
Tone + CTS
♦
Tone + DCS
♦
External

2.06.01 Generating a Test Tone

GENERATE
Property of Ramsey Electronics, Inc.
Modulation
by the T icon. If the T icon is not already flashing, press the
Do not reproduce or distribute.
To enter a 1 kHz tone press
Example:
To toggle the internal tone if you are already in the internal tone field, press
twice, once to get there, and another to toggle it off.
Example:
or
To enter a new tone deviation, press FM. The selected field will become the FMi for entering
deviation. To enter +/-3 kHz of deviation, press
and 75 kHz in this field.
Example:
♦
♦
♦
♦
To generate an internal tone, press INT. The
TX Level
LED next to the
COM3010 will display the last deviation used
which is indicated by the FMi icon (stands for
Seq/Reg
FM internal), and the last tone used indicated
1, kHz/mV. You can enter between 0.1Hz to 3 kHz into this field.
3,
17
BASIC OPERATION
External + CTS
External + DCS
Two Tone only
Two Tone + CTS
INT key will light and the
INT button to select the tone field.
kHz/mV. You can enter between 0.1 Hz
INT once, or