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"Sg" represents "Slow Gate" (Press "Down" will switch to "Fg", Slow Gate)
1.
"f:207.8350 Mhz"is the frequency of signal source
2.
"REF FS "represents the field strength, and the tested result will be showed in a bargraph
3.
display
"0mV" represents the voltage level of tested signal
4.
Notes: The Frequency Range of AW07A in Frequency Mode is 1-500MHz.The "Frequency Mode" of
AW07A has two time gate, they are expressed by "Fg" and "Sg". "Fg" is the Fast Gate, while "Sg"
represents Slow Gate. In Fast Gate Mode, the displayed frequency is only 6 digits, counted in
MHz. In Slow Gate Mode, the displayed frequency has 7 digits, and 4 digits after the decimal
point. It's more accurate than Fast Gate Mode. As a general rule the longer the time window the
more accurate the frequency counted. The accuracy of this counter is typically better than 0.08 %.
UV/HF switch must be on HF position in Frequency Counter Mode, otherwise "FREQ.C
SW Error ,PSE VU/HF SW UP" will be showed on LCD. Additionally, the tested field strength
level is just for reference, is the same to field strength meter, it does not have the laboratory
accuracy. It tests the RF field strength near your antenna system, and it's very useful when you
need to know the RF interference status around your station. If you have a strong RF
interference around your station, the antenna analyzer may be less accurate than the case in a
good RF environment. It's because the antenna gets the interference current down to the AW07A,
and it cancels some of the transmitted power from the analyzer.
WARING: AW07A is a RF sensitive device, if you have a very strong RF interference, please stop
testing your antenna. It may damage your AW07A.
SIGNAL GENERATOR:
The AW07A is useful as a non-precision signal source. It provides a relatively pure signal of
approximately 2 Vpp (due to local legal) into 50 ohm loads. The AW07A internal source impedance is 50
ohms. The AW07A is not a stable generator, but has adequate stability for non-critical applications such as
alignment of broad bandwidth filters and circuits.
EXTERNAL POWER SUPPLY:
The AW07A can be used with external low voltage dc supplies .Voltage should not
be lower than 10.8 volts, and preferably not higher than 12.5 volts. The case of the
AW07A is connected directly to the negative terminal.. The current consumption is 150
mA maximum on HF, and 165 mA maximum on V/UHF(all with backlight off).
The AW07A has a 2.1 mm DC power connector on the right of the TUNE Knob. This
connector is labeled "DC 10.8-12V".
The outside conductor of the DC connector is negative, while the center conductor
positive. Inserting a power plug to the "DC 10.8-12V" connector, will disable the power from the internal
batteries.
WARNING: REVERSE POLARITY OR EXCESSIVE VOLTAGE CAN DAMAGE OR DESTROY THE
AW07A. NEVER APPLY MORE THAN 13 VOLTS, NEVER USE AC OR POSITIVE GROUND
SUPPLIES! NEVER ADD OR REMOVE BATTERIES WITH AN EXTERNAL POWER SUPPLY
CONNECTED TO THIS UNIT, OR WITH THE POWER SWITCH ON.
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