15
Subject to change without notice
Connect coaxial cable [M8 + adaptor M11] to the test signal out-
put and to the RF input of the HM5014-2. The marker reading
may be in the range of –27.0 dBm to –33.0 dBm.
2.2.10 Check of TG amplitude adjustment
To check the adjustment of TG amplitude, set the HM5014-2
to the following:
Center 500
MHz
RBW
1
MHz
Span
Zero
Span
ATT
40
dB
Ref.-Level
+10
dBm
Marker Active
TG
Active
TG Level
+1 dBm
(Max Hold, Average and Video fi lter not activated)
Observe the marker level displayed on the CRT, and compare
the displayed level to the level shown on the readout. Vary the
level from +1 dBm to –10 dBm and check the marker readout
vs. the TG level readout.
Now set the ATT to, 30, 20, 10 and 0 dB while setting the TG level
from –10, -20, -30 and –40 dBm to minimum, so that the reading
of the marker value stays in the same major graticule division
on the CRT for best precision of the marker values.
The difference between readout of TG level and readout of mar-
ker level may not exceed 3 dB in either direction.
2.2.11 Full Band Amplitude check
To check the amplitude fl atness of the entire frequency range,
set the HM5014-2 to the following:
Center 500
MHz
Span
1000
MHz
RBW
1000
kHz
ATT
10
dB
Ref.-Level
-20
dBm
Max
Hold Active
Marker Active
(Tracking Generator, Average and Video fi lter not activa-
ted)
Then set the following on the RF Generator [M1] using mea-
surement setup 1
Amplitude
-30
dBm
Modulation
Off
Freq. Step 1 MHz
and manually or automatically set all frequencies from 1
MHz to 1000 MHz.
The result on screen will be a line centered around the 2nd
graticule line from the top.
Now repeat this test with a Center frequency setting of 550
MHz, and initialize the screen anew to use a “fresh” Max Hold
screen. This will allow testing also to 1050 MHz.
Differences up to ±2 dB in the above measurements are per-
mitted when measuring along the line using the marker.
For higher precision of the result, the generator should be
measured fi rst with a power meter connected to the end of the
connection to the spectrum analyzer, thus establishing the va-
lues for a correction table for the generator. These values have
to be taken into account when evaluating a precise pass/fail
decision (see measurement setup 3).
2.2.12 Check of Audio Output
To check the audio output of the HM5014-2, connect a set of PC
speakers to the audio output of the HM5014-2. Set the HM5014-
2 to the following:
Center 500
MHz
Span
1000
MHz
RBW
1000
kHz
ATT
10
dB
Ref.-Level
-20
dBm
(Tracking Generator, Average, Max Hold and Video fi lter not
activated)
and set the phones level so that a noise output signal can be
obtained, broken by small pauses when the instrument pre-
pares for the next sweep.
2.2.13 Check of Probe Power
To check the correct function of the probe power supply,
connect special cable [A8] to the probe power output of the
HM5014-2. Connect the other end to a digital multimeter [M10],
red to positive input, black to negative. The voltage measured
must range between 5.7 and 6.3 Volts
2.2.14 Check of Attenuator
To check the attenuator of the HM5014-2, use measurement
setup I.
In order to get best test results, this test should be executed
3 times at frequencies of 10 MHz, 500 MHz and 1000 MHz. Set
the HM5014-2 to the following:
Center
set to frequency chosen for test (see above)
Span Zero
span
RBW
1000
kHz
Ref. Level depends on ATT
Marker Active
Video
fi lter Activate where needed
Now set the Generator to the desired measurement frequency
and set an output level of –30 dBm.
The marker readout will show this level independent of the loca-
tion on the CRT, which will vary with the ATT setting chosen. The
readout may not vary less than 8 dB and not more than 12 dB
from setting to next setting over the entire frequency range (not
more than 2 dB deviation from 10 dB nominal attenuation)
2 . P e r f o r m a n c e a n d F u n c t i o n a l T e s t s
