Atec Keithley-2820 - Manual (Page 7)

www.keithley.com
1.888.KEITHLEY
(U.S. only)
Si
de
T
ex
t
R
F/
M
Ic
R
o
w
a
v
E
M
od
el
28
20
spe
ci
fic
at
io
ns
2820 RF Vector Signal Analyzer
400MHz to 4GHz or 6GHz
Spectrum analysis controls and Parameters
FrequenCy SpAn: 2820-004: 200Hz to 3.6GHz 1 . 2820-006: 200Hz to 5.6GH z 2 . Zero span
mode available.
Sweep tiMe SettingS in zero SpAn Mode: 1µs to 30s.
Sweep ModeS: Continuous, single.
iF bAndwidth
3 :
relative flatness over 20Mhz: ±1.0dB (typical).
relative flatness over 4Mhz: ±0.5dB (typical).
3db bw: >30MHz (typical).
6db bw: >38MHz (typical).
reSolution bAndwidthS: 1Hz to 3MHz (ENBW) with 1Hz resolution for spans >0Hz 4 .
reSolution bAndwidth FilterS (1hz resolution) 5 :
brickwall: 10Hz to 35MHz, flat BW 6 .
root raised Cosine α = 0.22: 10Hz to 28MHz, 3dB BW.
gaussian: 10Hz to 7MHz, 3dB BW.
5 pole Synchronously tuned: 10Hz to 2.3MHz, 3dB BW.
4 pole Synchronously tuned: 10Hz to 1.75MHz, 3dB BW.
AMplitude: reference level range Setting: +40dBm to –170dBm.
Scale Settings: Manual: 0.1dB/division to 40dB/division.
pre-AMpliFier: On, off.
400MHz to 2.5GHz (Char gain 15dB).
2.5GHz to 4.0GHz (Char gain 14dB).
4.0GHz to 6.0GHz (Char gain 12dB).
diSplAy:
detection Modes: Normal, maximum, minimum, sample, power average, power average +
noise correction.
trace hold displays: Normal, max hold, min hold, min/max hold.
AVerAging: 1 – 1,000 traces 7 . Modes: Log, power, log group, power group, max group,
min group, min/max group.
MArkerS: 4 independent markers, each with a delta marker, normal and peak modes.
Marker Amplitude resolution: 0.01dB from front panel, 0.001dB via remote interface.
ChAnnel power liSt: Single command to execute up to 501 power measurements.
NoTES
1. Over range operation provided: Maximum span is 3.675GHz. Performance below 400MHz is not specified.
2. Over range operation provided: Maximum span is 6.175GHz. Performance below 400MHz and above 6.0GHz
is not specified.
3. Flatness across a given measurement span is the sum of IF flatness and RF flatness.
4. RBW accuracy <1% characteristic.
5. Filter types are settable in zero span, channel power list, and ACPR modes.
6. ENBW
≈ 1.10 · RBW setting. 6dB BW ≈ 1.09 · RBW setting.
7. CDMA and WCDMA measurement personalities limit number of trace averages to 100.
Spectrum analysis amplitude 1
MAxiMuM SAFe input power: +35dBm.
MAxiMuM SAFe dC VoltAge: ± 50VDC.
aBSoLUTE accURacY (typical) 2
325Mhz to 400Mhz: 0.2dB (characteristic).
400Mhz
≤ Freq ≤ 2000Mhz: ±0.6 (±0.2) dB.
2000Mhz < Freq ≤ 6000Mhz: ±0.8 (±0.4) dB.
6000Mhz < Freq ≤ 6500Mhz: ±5.0dB (characteristic).
reF leVel ACCurACy (referenced to 0dbm): +10 to –75dbm: ±0.3dB.
–75 to –100dbm: ±0.6dB.
diSplAy SCAle Fidelity 3 : ±0.2dB.
reSolution bAndwidth SwitChing error 4 : ±0.01dB.
AttenuAtor ACCurACy 5 :
Freq <2.5ghz: ±0.15dB for 5 through 25dB attenuator settings. ±0.25dB for 30dB attenuator
setting.
Freq ≥2.5ghz: ±0.2dB for 5 through 10dB attenuator settings. ±0.25dB for 15 through 25dB
attenuator settings. ±0.32dB for 30dB attenuator setting
AMplitude repeAtAbility 6 : ±0.15dB (±0.07dB typical).
AMplitude ChAnge due to preAMp on: ±0.3dB (±0.18dB typical).
diSplAyed AVerAge noiSe leVel:
≤–136dBm/Hz, pre-amp off (F ≤2500MHz).
≤–127dBm/Hz, pre-amp off (2500MHz ≥ F ≤ 4000MHz).
≤–120dBm/Hz, pre-amp off (4000MHz ≥ F ≤ 6000MHz).
≤–146dBm/Hz, pre-amp on (F ≤2500MHz).
≤–137dBm/Hz, pre-amp on (2500MHz ≥ F ≤ 4000MHz).
≤–131dBm/Hz, pre-amp on (4000MHz ≥ F ≤ 6000MHz)
VSwr: ≤1.4:1 (characteristic).
SPURIoUS aND RESIDUaL RESPoNSES
toi (referred to the 2820 input, two 0dbm input signals and reference level = 0dbm):
F ≤2500MHz = +35dBm (characteristic). F >2500MHz = +41dBm (characteristic).
Soi (referred to the 2820 input, 0dbm input signals and reference level = 0dbm):
+50dBm (characteristic).
reSiduAlS (reference level setting ≤–40dbm): ≤–90dBm.
lo relAted SpurS: ≤–55dBc.
NoTES
1. Specifications apply when autocoupled unless otherwise stated.
2. Input power at 0dBm, span = 1MHz and RBW = 100Hz.
3. Signal level within 50dB of top of screen, reference level 0dBm, no change in instrument state.
4. RBW switching error specified under conditions where span / RBW setting
≤15000 and frequency spans
≤25MHz
5. Only applies if input attenuator is changed from autocoupled setting.
6. For repetitive CW power readings with read signal removed then reapplied for signals: >40dB above noise
floor within 5 minutes.
Phase Noise
SSb phASe noiSe, dbc/hz:
carrier
Frequency,
GHz
Freq. offset, kHz
characteristic (Typical)
0.1 1.0 10 20 100 1,000
0.4 –106 –119 –124 –122 –121 –126
1.0 –102 –118 –119 (–115) –118 –121
2.0 –97 –112 –114 –115 –113 –116
4.0 –90 –108 –111 –111 –109 –112
6.0 –89 –105 –108 –109 –107 –110