General Dynamics R2600 Series, Operator'S Manual, Page: 222 / 402

B/W
Selects either wide or narrow IF bandwidth
of the unit via softkey selection.
Freq
Enter the desired monitor frequency using
keypad or TUNING knob.
Attenuation
Selects the amount of attenuation at the RF
input to the monitor receiver using softkeys.
Selectable input attenuation is useful in
adjusting displays for a wide range of input
levels, as well as for use in high RF field
environments where intermodulation may
cause desensitization of the receiver.
Mon RF In
Selects the RF input port via softkeys. The
RF I/O port contains an RF load and should
be used for direct connection to the radio
under test. The ANT port accesses the unit's
sensitive receiver and should be used with an
antenna for "off-the-air" reception. Selection
of the ANT port is indicated by a red LED
next to the ANT connector.
CAUTION
Do not apply input power to the ANT input
port. In the event RF power is inadvertently
applied, the port is protected by an in-line
RF fuse. This fuse may be accessed by
unscrewing the front of the BNC connector
out of the front panel. Refer to paragraph
12-2.4.1 under the General Operations tab
in this manual for additional detail.
13-8.2 GENERATE Mode
The GENERATE mode (figure 13-11)
configures the Analyzer to generate an RF
signal at a controlled output level. The
GENERATE mode thus provides for a wide
range of radio receiver testing. In
SECURENET Generate mode, the RF Zone is
similar to the RF Zone in standard mode. It is
capable of setting up the analyzer to generate
RF output through its RF I/O port or through
the Generator Output (GEN OUT) port.
The RF Zone contains fields for choosing the
generator bandwidth, frequency, output level,
and output connector of the SECURENET RF
signal. All of these fields operate as described
under the General Operations tab in this manual
except the Modulation Type field is not
required.
Specific controls which further configure the
GENERATE mode are located in RF Control
Zone when GENERATE is first selected.
176