Modulation reference, Frequency counter, Internal time base reference – Atec Agilent-8902A User Manual
Page 4: Rf power

4
Modulation Reference
AM CALIBRATOR DEPTH AND ACCURACY:
33.33% depth nominal, internally calibrated to an accuracy of ±0.1%.
FM CALIBRATOR DEVIATION AND ACCURACY:
34 kHz
peak
deviation nominal, internally calibrated to an accuracy
of ±0.1%.
Supplemental Characteristics:
CARRIER FREQUENCY: 10.1 MHz.
MODULATION RATE: 10 kHz.
OUTPUT LEVEL: – 25 dBm.
Frequency Counter
RANGE:
150 kHz to 1300 MHz.
150 kHz to 26.5 GHz.
SENSITIVITY:
12 mV
rms
(–25 dBm), 150 kHz
≤
f
c
≤
650 MHz.
22 mV
rms
(–20 dBm), 650 MHz
≤
f
c
≤
1300 MHz.
40 mV
rms
(–15 dBm), 150 kHz
≤
f
c
≤
650 MHz.
71 mV
rms
(–10 dBm), 650 MHz <f
c
≤
1300 MHz.
40 mV
rms
(–15 dBm), 1300 MHz <f
c
≤
26.5 GHz.
MAXIMUM RESOLUTION:
1 Hz.
10 Hz.
ACCURACY:
± reference accuracy ± 3 counts of least-significant digit,
f
c
<100 MHz.
± reference accuracy ± 3 counts of least-significant digit, or
30 Hz, whichever is larger, f
c
≥
100 MHz.
Supplemental Characteristics:
MODES: Frequency and Frequency Error (displays the difference
between the frequency entered via the keyboard and the actual RF
input frequency).
SENSITIVITY IN MANUAL TUNING MODE:
Approximate frequency must be entered from keyboard.
0.22 mV
rms
(–60 dBm).
0.71 mV
rms
(–50 dBm).
Using the RF amplifier and the IF amplifiers, sensitivity can be
increased to approximately:
–100 dBm.
–90 dBm, f
c
≤
1300 MHz.
–75 dBm, 1300 MHz <f
c
≤
26.5 GHz.
8. After 30-day warm-up.
9. The 8902A fundamental RF power measurement units are watts. Further internal
processing is done on this number to display all other units.
10. When using a power sensor, the noise specification may mask the linearity speci-
fication and become the predominant error. When operating on the top RF power
range, add the power sensor's linearity percentages found in the power sensor's
specifications.
Internal Time Base Reference
FREQUENCY: 10 MHz.
AGING RATE:
<1 x 10
–6
/month.
<1 x 10
–9
/day (Option 002)
8
.
Supplemental Characteristics:
INTERNAL REFERENCE ACCURACY:
Overall accuracy is a function of timebase calibration, aging rate,
temperature effects, line voltage effects, and short-term stability.
Standard
Option 002
Aging Rate
<1 x 10
–6
/mo.
<1 x 10
–9
/day
Temperature Effects
<2 x 10
–7
/°C
<2 x 10
–10
/°C
Line Voltage Effects
(+5%, –10% Line
<1 x 10
–6
<6 x 10
–10
Voltage Change)
Short-Term Stability
—
<1 x 10
–9
for
1 second average
RF Power
The Agilent 8902A measuring receiver, with
11722A sensor module, performs RF power meas-
urements from –20 dBm (10 µW) to +30 dBm (1 W)
at frequencies from 100 kHz to 2.6 GHz.
The 8902A measuring receiver, with 11792A sensor
module, performs RF power measurements from
–20 dBm (10 µW) to +30 dBm (1 W) at frequencies
from 50 MHz to 26.5 GHz.
RF POWER RESOLUTION
9
:
0.01% of full scale in watts or volts mode.
0.01 dB in dBm or dB
relative
mode.
LINEARITY (includes sensor non-linearity):
RF range linearity ± RF range-to-range change error.
RF RANGE LINEARITY (using recorder output)
10
:
±0.02 dB, RF ranges 2 through 5.
±0.03 dB, RF range 1.
Using front-panel display add ±1 count of least-significant digit.
RF RANGE-TO-RANGE CHANGE ERROR (using recorder output):
±0.02 dB/RF range change from reference range.
Using front-panel display add ±1 count of least-significant digit.
INPUT SWR:
Using 11722A sensor module: <1.15.
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.