Atec Agilent-11792A - Manual (Page 6)

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13
DETECTOR LINEARITY:
For IF Synchronous Detector:
±0.007 dB/dB change, but not more than
±0.02 dB/10 dB change.
Typically <±0.004 dB/dB change and
<±0.01 dB/10 dB change.
For IF Average Detector (0 °C to +35 °C):
±0.013 dB/dB change,
but not more than±0.04 dB/10 dB change,
but not more than ±0.06 dB/10 dB change.
Typically <±0.008 dB/dB change and
<±0.02 dB/10 dB change.
MIXER LINEARITY:
Negligible, levels
≤
–5 dBm.
±0.04 dB, levels >–5 dBm and frequencies >1300 MHz.
IF RANGE-TO-RANGE ERROR (see Tuned RF Level range plot) 13 :
±0.02 dB/IF range change, IF ranges 1 through 5.
±0.05 dB/IF range change, IF ranges 6 through 7.
RF RANGE-TO-RANGE ERROR:
±0.04 dB/IF range change (Tuned RF Level only).
±0.06 dB/IF range change, RF Power to Tuned RF Level.
FREQUENCY DRIFT ERROR: ±0.05 dB/kHz frequency drift from
center of IF (using IF synchronous detector).
NOISE ERROR: ±0.18 dB for levels <–120 dBm, or for levels
<–110 dBm if Special Function 1.9 is selected.
±0.18 dB, levels <–110 dBm, 2.5 MHz
≤
f
c
≤
1300 MHz.
±0.18 dB, levels <–98 dBm, 1300 MHz
≤
f
c
≤
12.4 GHz.
±0.18 dB, levels <–93 dBm, 12.4 GHz
≤
f
c
≤
18.0 GHz.
±0.18 dB, levels <–88 dBm, 18.0 GHz
≤
f
c
≤
26.5 GHz.
Negligible elsewhere.
INPUT SWR:
<1.18, at 8902A RF input, RF range 1 and 2.
<1.40, at 8902A RF input, RF range 3.
<1.33, at 11722A RF input, RF range 1 and 2.
<1.50, at 11722A RF input, RF range 3.
<1.33, at 11722A RF input, RF range 3 with Special
Function 1.9.
Using 11792A sensor module:
<1.15, 1300 MHz
≤
f
c.
<1.25, 1300 MHz
≤
f
c
≤
18.0 GHz.
<1.40, 18.0 GHz
≤
f
c
≤
26.5 GHz.
Supplemental Characteristics:
ABSOLUTE LEVEL MEASUREMENT ACCURACY AT LOW LEVELS
(at constant temperature and after RF range calibration is com-
pleted)
12 :
Absolute level measurement accuracy is a function of the RF
Power and Tuned RF Level measurement accuracy. For a source
with an output SWR of 1.7 and level of –110 dBm the typical
absolute level measurement accuracy is 0.46 dB rss and 1.02 dB
worst case.
IF FREQUENCY: 455 kHz.
ACQUISITION TIME:
<4 seconds,
≥
–110 dBm.
<10 seconds,
≥
–127 dBm.
<4 seconds, levels
≥
–85 dBm.
<10 seconds, levels <–85 dBm.
RESPONSE TIME (responding to changes in level of an acquired
signal):
<2 seconds,
≥
–110 dBm.
<5 seconds,
≥
–127 dBm.
<2 seconds,
≥
–85 dBm.
<5 seconds, <–85 dBm.
DISPLAYED UNITS: Watts, dBm, dB
relative
, %
relative
, volts, mV, µV,
dB V, dB mV, dB µV.
12. Tuned RF Level accuracy will be affected by residual FM of the source-under-test.
If the residual FMpeak is >50 Hz measured over a 30 second period in a 3 kHz
BW, Tuned RF Level measurements should be made using the IF average detector
(30 kHz BW) by using Special Function 4.4. The Tuned RF Level measurement sen-
sitivity when using the IF average detector is –100 dBm.
13. IF Ranges 6 and 7 (see Tuned RF Level range plots) are only used in automatic
operation for Tuned RF Level measurements below approximately –110 dBm for
the IF synchronous detector, and below approximately –85 dBm for the IF average
detector.