HP 5344S User Manual

Model8756A
1-19. Five Key Channel Operation
1-20. Five front panel keys for each channel
select [MEAS RATIO] (NR B/R NB), [MEAS
POWER] (A. B, R), [DISPLAY] (Measurement,
Memory, or Measurement minus Memory),
[SCALE] (20, 10, 5, 2, I, .5, .2, or .1 dB per divi-
sion),
and [REF] (LEVEL or POSition). Use of
the [SHIFT] key enables [CHAN OFF], [DIS-
PLAY--.MEM], [MKR--.REF], and [AUTO]
(which scales the data and changes the
Reference Level so that the data fits on the
CRT Display).
1-21. Data Entry
1-22. Data for the various functions may be
entered using one of the Entry area functions
(knob, step keys, or keypad).
1-23. Digital Display
1-24. Data for both channels is shown on the
CRT Display. The Channel Annotation area,
above the graticule, annotates the Measurement,
Scale per Division, Reference Level value, and
Cursor value. The Reference Position for each
channel activated is shown on the left side of the
graticule. Soft Keys may be enabled using the
keys to the immediate right of the display. These
functions include: [CURSOR] (reads the value
of the cursor for both channels), [AVERAGE]
(Averaging Factor, Averaging ON/OFF), [CAL]
(Short/Open calibration and Detector Offset),
[PLOT] (outputs the current display to an HP
7470A or 9872C Plotter), [DISPLAY] (Labels
ON/OFF, Hold, Menu OFF), and [MORE]
(Modulation ON/OFF, Service).
1-25. Instrument State and SAVE/RECALL
1-26. The Instrument State for remote opera-
tion is identified by 4 LED's (Light Emitting
Diodes). Local operation may be restored by
pressing [LOCAL]. [PRESET] is used to perform
a hardware self-test and restores the instrument
to a predefined state. [SAVE] and [RECALL] are
used to save/recall up to nine front panel
states.
1-27. AC Modulation
1-28. The 8756A uses the AC detection techni-
que in conjunction with its detector inputs. This
technique has the advantage of providing nearly
General Information
drift-free operation. An RF or microwave signal
is square-wave modulated at 27.8 kHz. and pro-
vides the source for the 8756A. Absolute power.
reflection. or transmission signals are then
detected and the modulation envelope is carried
to an 8756A detector input. After filtering and
shaping, the data is digitized and displayed.
1-29. The modulation drive needed for the 27.8
kHz modulation is available from any one of
the three Modulator Drives BNC outputs on the
rear panel of the 8756A. They may be used to
drive the external AM or PULSE INPUT
(8340A) of the RF or microwave source, or to
drive
an external modulator as required for a
source without internal modulation capability.
1-30. OPTIONS
1-31. Option 907, Front Handles Kit
1-32. Option 907 (HP Part Number 5061-0090)
contains a pair of front handles and the
necessary hardware for mounting the handles to
the 8756A. Refer to
Section II of this Operating
and Service Manual for a detailed description of
this kit and instructions for installation.
1-33. Option 908, Rack Mount Kit
1-34. Option 908 (HP Part Number 5061-0078)
contains a pair of flanges and the necessary
hardware to mount the 8756A in an equipment
rack with 482.6 mm ( 19 inches) horizontal spac-
ing. Refer to Section II of this Operating and
Service Manual for a detailed description of
this kit and instructions for installation.
1-35. Option 909, Rack Mount/Front Han-
dles
Kit
1-24. Option 909 (HP Part Number 5061-0084)
contains one Option 907 Front Handles Kit and
one Option 908 Rack Mount Kit (see descrip-
tions
in preceding paragraphs). Refer to Section
II of this Operating and Service Manual for a
detailed description of this kit and instructions
for installation.
1-36. Option 910, Extra Operating and
Service
Manual
1-37. The standard instrument is supplied with
one Operating and Service Manual (including
an Operating Information supplement). Each
1-3

HP 5344S Specifications

General

Brand	HP
Model	5344S
Category	Measuring Instruments
Language	English