HP 5344S User Manual

Operating Information
Model 8756A
NOTE
If the Sweep Oscillator is operating properly, but
the CURSOR value is not reading the correct absolute
power value, check to see that the 27.8 kHz
modulation has been correctly applied. If +10.00 dBm
cannot be achieved, the upper level of dynamic range
will not be tested.
7. Disconnect the Detector from the RF output of the Sweep
Oscillator. Then, on the 8756A, press Channel 1 [SHIFT]
[SCALE] (AUTOSCALE) to put the trace on the display. Press
the Soft Key [AVERAGE] then [AVG 1 FACTOR] to turn
averaging on with a factor of 8. Wait about 20 seconds to
allow averaging to settle. Then press [MAIN MENU] followed
by [CURSOR] and [CURSOR MAX 1]. The Cursor value should
display -50.00 dBm or lower. This is the noise floor power
level. Note this information for future reference. It is
normal for this value to change +1 dB; however, the noise
floor should always be -50.00 dBm or lower.
8. Insert the Microwave Test Device between the RF output of
the Sweep Oscillator and the Detector. On the 8756A, press
Channel 1 [DISPLAY M-MEM] and then [SHIFT SCALE] (AUTO-
SCALE). Wait about 20 seconds to allow averaging to
settle. Press [CURSOR MAX 1] to find the trace maximum.
The CURSOR value in the ACTIVE ENTRY AREA now displays the
insertion loss of the Microwave Test Device. Note this
value for future reference. If a HP 7470A or 9872C HP-IB
plotter is available, make a hardcopy plot of the display
for future reference. (Refer to Fig. 3-2 for more
information on outputting to the plotter.) If a compatible
plotter is not available, sketch the display, noting Start
and Stop frequencies, noise floor, and insertion loss.
3-50
This plot or sketch will be used for comparison during
future Operator's Checks of the A Detector Input. The
characteristics of the Microwave Test Device should not
vary significantly from one comparison to the next.
Figure 3-6 Operator's Check (4 of 5)

HP 5344S Specifications

General

Brand	HP
Model	5344S
Category	Measuring Instruments
Language	English