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Model8555A
General Information
Table 1-1. 8555A/8552A/8552B Specifications (Continued)
Residual Responses: Referred to signal level at input
mixer on fundamental mixi·ng: <-90 dBm.
Display Range
Log: 70 dB, 10 dB/div with 8552B 2 dB/div log
expand on a 16 dB.display.
Linear: From 0.1 mV to 100 mV/div in a 1, 2
sequence on an 8-division display.
Display Uncalibrated Light: Panel light warns
operator of uncalibrated amplitude display if the
IF
or
video bandwidth selected is too narrow for
combination of scan width and scan time se-
lected.
Input Attenuator Range: 0- 50 dB in 10 dB steps.
ABSOLUTE CALIBRATION ACCURACY
'I'he overall absolute calibration accuracy of the
spectrum analyzer in a particular application is a
function of the measurement technique. The follow-
ing elements also affect absolute calibration accuracy:
Frequency Response: With 10 dB input attenuator
setting.
Frequency
Mixing
IF Freq.
Frequency
Range
Mode
Response
(GHz)
(n)
(MHz)
(dB max.)
0.01- 2.05
1-
2050
±1.0
1.50 - 3.55
1-
550
±1.0
2.07- 6.15
2-
2050
±1.25
2.60- 4.65
1+
550
±1.0
4.11- 6.15
1+
2050
±1.0
4.13- 10.25
3-
2050
±1.5
6.17. 10.25
2+
2050
±1.5
6.19- 14.35
4-
2050
±2.0
8.23- 14.35
3+
2050
±2.0
10.29 - 18.00
4+
2050
±2.0
IF gain variation with different bandwidth settings:
(at 20°C).
Log: ±0.5 dB.
Linear:
±
5.8%.
Amplitude Display: Log ±0.25 dB/dB but not more
than ±1.5 dB over the full 70 dB display range.
Linear: ±2.8% of full 8-division deflection.
Input RF Attenuator: Frequency response typically
±0.6 dB from 10 MHz to 18 GHz.
Log Reference Level: Accurate to ±0.2 dB (±2.3%
Linear Sensitivity).
Log Reference Level Vernier: Accurate to ±0.1 dB
(1.2%) in 0, -6, and -12 dB positions; otherwise,
±0.25 dB (±2.8%).
Calibrator Output: Amplitude ·30 dBm, ±0.3 dB.
Frequency 30 MHz, ±0.3 MHz (8552A),±3 kHz
(85528).
INPUT SPECIFICATIONS
Input Impedance: 50!2 nominal (0.01- 18 GHz).
Reflection Coefficiertt:<0.130 (1.30 SWR) for input
RF attenuator settings
~10
dB.
Maximum Input Level:
(-~~:0~~
DO NOT EXCEED THE FOLLOWING
MAXIMUM INPUT LEVELS:
Max-
imum
Input
Levels
dBm
Watts
DC
Rms
Peak
Input
0.01 -
18 GHz
+33
2
±20
10
14.14
Con nee-
tor
Incident
1.0
on
+10
Input
10mW
±20
0.707
Mixer
1
The INPUT ATTENUATION control must be in the
30 dB or greater position when applying +33 dBm or
input mixer will be damaged. The power levels listed
apply for peak or average power,
2
Do not exceed
±
20 volts de. Apply only de voltages
with rise times less than 106 volts per second. Do not
change INPUT ATTENUATION levels when devol-
tages are applied to RF' INPUT Connector.
RF Input Connector: Type N female.
External Mixer Input Connector: BNC female; LO
power transfer to external mixer through connec-
tor as well as 2.05 GHz IF signal return to
spectrum analyzer. LO power typically 0 dBm.
SCAN TIME SPECIFICATIONS
Scan Time: 16 internal scan rates from 0.1 ms/div to
10 sec/div in a 1, 2, 5 sequence.
Scan Time Accuracy: 0.1 ms/div to 20 ms/div, ±10%,
50 ms/div to 10 sec/div, ±20%.
GENERAL SPECIFICATIONS
Power Requirements: 115 or 230 volts± 10%, 50 · 60
Hz, normally less than 225 watts (varies with
plug-in units used).
Dimensions: Model 140T or 141 T Display Section,
9-1/16 in. H (incl. feet) x 16-3/4 in. W x 18-3/8 in.
D (229 x 425 x 467 mm). Model 1438 Display
Section, 21 in. H (incl.feet) x 16-3/4 in. W x
18-3/8 in. D (533 x 425 x 467 mm).
Weight:
Model 8555A RF Section: Net 14lb 15 oz (6,8 kg).
Model 8552A IF Section: Net 9lb (4,1 kg).
Model 8552B IF Section: Net 9Ib (4,1 kg).
Model 140T Display Section: Net 37lb (16,8 kg).
Model141T Display Section: Net 40 lb (18 kg).
Model 143S Display Section: Net 62lb
(28,1 kg).
1-5
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