Agilent E8663B Analog Signal Generator User’s Guide
13
Signal Generator Overview
Front Panel Display
L
This annunciator appears when the signal generator is in listener mode and is
receiving information or commands over the RS- 232, GPIB, or VXI- 11 LAN
interface.
MOD ON/OFF
This annunciator indicates whether active modulation formats have been enabled
or disabled. Pressing the
Mod On/Off
hardkey enables or disables all active
modulation formats (AM, FM,
Φ
M, Pulse, or I/Q) that are applied to the output
carrier signal available through the RF Output connector. The
Mod On/Off
hardkey
does not set up or activate an AM, FM,
Φ
M, Pulse, or I/Q format; each individual
modulation format must still be set up and activated (for example,
AM > AM On
) or
nothing will be applied to the output carrier signal when the
Mod On/Off
hardkey is
enabled.
OVEN COLD
This annunciator appears when the temperature of the internal oven reference
oscillator has dropped below an acceptable level. When this annunciator is on,
frequency accuracy is degraded. This condition should occur for several minutes
after the signal generator is first connected to line power.
PULSE
This annunciator appears when pulse modulation is on.
R
This annunciator appears when the signal generator is remotely controlled over
the GPIB, RS- 232, or VXI- 11/Sockets LAN interface (TELNET operation does not
activate the R annunciator). When the R annunciator is on, the front panel keys
are disabled, except for the Local key and the line power switch. For information
on remote operation, refer to the
E8663B Signal Generator Programming Guide
.
RF ON/OFF
This annunciator indicates when the RF and microwave signal is present (
RF ON
)
at the RF OUTPUT, or if the RF and microwave signal is not present (
RF OFF
) at
the RF OUTPUT. Either condition of this annunciator is always visible in the
display.
S
This annunciator appears when the signal generator has generated a service
request (SRQ) over the RS- 232, GPIB, or VXI- 11 LAN interface.
SWEEP
This annunciator appears when the signal generator is in list or step sweep mode.
List mode is when the signal generator can jump from point to point in a list (hop
list); the list is traversed in ascending or descending order. The list can be a
frequency list, a power level list, or both. Step mode is when a start, stop, and
step value (frequency or power level) are defined and the signal generator
produces signals that start at the start value and increment by the step value
until it reaches the stop value.
T
This annunciator appears when the signal generator is in talker mode and is
transmitting information over the GPIB, RS- 232, or VXI- 11 LAN interface.
