Atec Agilent-N5171B - Manual (Page 14)

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Amplitude modulation (Option UNT) 1
AM depth type Linear or exponential
Maximum depth 100%
Depth resolution 0.1% of depth (nom)
AM depth error
@1 KHz rate and < 80% depth
f < 5 MHz < 1.5% of setting + 1% (typ 0.5% of setting + 1%)
5 MHz ≤ f ≤ 2 GHz < 3% of setting + 1 %
2 < f < 3 GHz < 5% of setting + 1% (typical 3% of setting + 1%)
Total harmonic distortion
@ 1 KHz rate
F < 5 MHz
30% depth < 0.25%, typical
80% depth < 0.5%, typical
5 MHz ≤ f < 2 GHz
(2 to 3 GHz is typical)
30% depth < 2%
80% depth < 2%
Frequency response 30% depth, 3 dB BW DC/10 Hz to 50 KHz
Frequency response wideband AM
(N5172B only)
Rates ALC off/on: DC/800 Hz to 80 MHz, nominal
AM inputs using external inputs
1 or 2
Sensitivity +1 V peak for indicated depth (Over-range can be 200% or
2.2 V peak)
Input impedance 50 Ω or 600 Ω or 1M Ω, Damage level: ± 5 V max
Paths AM path 1 and AM path 2 are summed internally for composite
modulation
Wideband AM inputs
(N5172B only)
Sensitivity 0.25 V = 100% (I input + 0.5 V offset)
Input impedance 50 Ω, nominal (I input)
Simultaneous and composite modulation 2
Simultaneous modulation All modulation types (IQ, FM, AM, ΦM, and pulse modulation) may be simultaneously enabled
except: FM and phase modulation cannot be combined and two modulation types cannot be
simultaneously generated using the same modulation source; for example, the baseband I/Q
generator, AM, and FM can run concurrently and all will modulate the output RF (this is useful
for simulating signal impairments)
Composite modulation AM, FM, and ΦM each consist of two modulation paths which are summed internally for
composite modulation; modulation can be any combination of internal or external sources
AM FM Phase Pulse Internal IQ 2 External IQ 2
AM + + + + + +
FM + + – + + +
Phase + – + + + +
Pulse + + + – + +
Internal I/Q 2 + + + + * +
External IQ 2 + + + + + –
+ = compatible, – = incompatible, * = Internal + External
1. AM specifications apply 6 dB below maximum specified power from 20 to 30 °C.
2. IQ modulation available on N5172B.