HP 83751A User Manual page 5

1. The (m) and (m) k e y s
are used to save and subsequently recall
sweeper operating parameters from one of
nine nonvolatile register locations.
2. The line POWER switch turns the sweeper
to either on or standby.
3. The Marker keys allow selection of up to
ten markers to be set anywhere within the
current frequency range. Marker
measurements are made using these keys as
well.
4. The Modulation keys allow selection of
pulse, AM, or FM modulation.
6. The SWEEP OUT BNC connector provides
voltage proportional to the sweep ranging
from 0 V et the start of a sweep to'+10 V
at the end of the sweep, regardless of sweep
width.
6. The Automatic level Control voltage input
path to the sweeper when its RF output
power level is being leveled externally.
7. The Power keys allow selection of the RF
output power level of the sweeper, as well
as other power related functions, such as
Automatic Level Control IALCI. The
key is used to select
the method used to regulate the sweeper
output power level. Either internal leveling or
external leveling [with a diode, power meter,
or source module] can be selected. Additional
equipment is required when external leveling
is used.
Sweeper rear panel features are depicted and described in detail in Chapter 7,
"Front/Rear Panel" in this manual.
6. The date entry keys are used to enter
and/or modify various sweeper parameters.
The @ key cancels all or part of an
erroneous parameter entry before it has been
terminated. The terminator keys [the
rightmost column of keys) are used to choose
the units for the entered parameter as well
as to terminate the oarameter entry. The
A
used to increase or decrease a parameter in
predetermined steps.
9. The
toggle the RF output power on and off.
10. RF OUTPUT
The
a female APC-3.5mm precision connector on
standard instruments. The connector metes
with a type-N male connector on option 1ED
instruments. The RF OUTPUT connector will
be found on the rear panel of sweepers with
option lE4.
11.
The front panel knob is used to increase
or decrease active parameters under the
pointers, and is used in manual frequency and
power sweeps.
12. The displays show the current values of
sweeper parameters as well as the status of
many of the sweeper functions. The left-hand
display shows the current frequency status,
whether it be swept or CW. The right-hand
display shows current marker, modulation end
sweep status parameters when they are
selected, as well as the current output power
level. The annunciators that appear below
the parameters are only visible when their
associated function is active. For example, the
STEP
key is used to
operating in stepped sweep mode.
13.
The Frequency keys are used to set the
connector mates with
various frequency parameters for the sweeper.
Swept frequency selections include Start/Stop,
functions. Continuous Wave ICWl mode may
also be selected for- outputting single
frequencies.
14. The (w) key is used to put
the instrument into a known state. There are
two preset modes: the factory mode, and a
user-defined mode.
15. The (m) key changes the function
of some of the kevs. When vou mess the
the sweeper performs the function printed in
blue above the key.
annunciator will only be visible when
V