N5194A矢量适配器数据表.pdf - 第4页

Page 4 Find us at www .keysight.com L atency ( Nominal value s ) Frequency transitions T ra nsition details E xter nal LO mo de, narrowband, nominal (µs) E xter nal LO mode, wideband, nominal (µs) Inte rna l LO mode, nom…

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Specifications
Frequency
Range
Specified range Tunable range
N5194A with option 520 50 MHz to 20 GHz 10 MHz to 20 GHz
N5194A with option 540 50 MHz to 40 GHz 10 MHz to 44 GHz
N5192A with option 52E 50 MHz to 20 GHz 10 MHz to 20 GHz
CW frequency resolution
0.001 Hz
Phase offset
Adjustable in 0.1° increments
Accuracy
Accuracy is equivalent to the external frequency reference in use.
External 6 GHz reference input
Frequency 6 GHz
Input amplitude +5 to +15 dBm (nom)
Input impedance 50 Ω (nom)
Lower band 10 MHz to < 20.000000016 GHz
– Main lower band 50 MHz to < 20.000000016 GHz
– Extended lower band 10 MHz to < 50 MHz
Upper band 20.000000016 GHz to 44 GHz
– Main upper band 20.000000016 GHz to < 40 GHz
– Extended upper band 40 GHz to 44 GHz
1. RF CW switching speed using an external hardware trigger. Speeds apply for any combination of frequency, amplitude ≤ max specified power and phase
switching.
2. For indexed waveform mode and real-time pulse generation mode during PDW streaming operation, minimum pulse spacing is 240 ns. Certain frequency
transitions will result in longer spacing due to update rate (transition time) limitations as described on Page 3 and 4. Also refer to page 9 under “PDW
streaming” for more details.
Switching speed for N5194A
1,2
Lower band Upper band
Main lower band Main upper band
40 GHz
20.000000016 GHz
44 GHz
10 MHz 50 MHz
Extended upper bandExtended lower band
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Latency (Nominal values)
Frequency
transitions
Transition details External LO mode,
narrowband,
nominal (µs)
External LO
mode, wideband,
nominal (µs)
Internal LO mode,
nominal (µs)
Internal LO mode,
Optimized
2
,
nominal (µs)
Within lower band Within main lower
band
3 2.5 3.5 3.5
Other transitions 3 2.5 3.5 —
Within upper band Within main upper
band
5 4.5 — —
Within upper
sub–bands
3
3 2.5 — —
Other transitions 5 4.5 — —
Between lower and
upper bands
Between main lower
and main upper
bands
5.5 5 — —
Other transitions 5.5 5 — —
RF phase settling criteria
Final frequency
10 MHz to < 2.85 GHz Measured to phase settled within 0.1 radians of final phase
2.85 GHz to < 8.64 GHz Measured to phase settled within 0.2 radians of final phase
8.64 GHz to < 17.3 GHz Measured to phase settled within 0.3 radians of final phase
≥ 17.3 GHz Measured to phase settled within 0.4 radians of final phase
Update rate (Transition time)
1
Frequency
transitions
Transition details External LO mode,
narrowband, spec
(typ)
External LO mode,
wideband, spec
(typ)
Internal LO mode,
spec (typ)
Internal LO mode,
Optimized
2
, spec
(typ)
Within lower band Within Main Lower
band
250 ns (190 ns) 220 ns (170 ns) 740 ns (470 ns) (210 ns)
Other transitions (250 ns) (220 ns) (250 ns) —
Within upper band Within Main Upper
Band
4.5 µs (2.5 µs) 4.5 µs (2.5 µs) — —
Within upper
sub–bands
3
(250 ns) (220 ns) — —
Other transitions (3.3 µs) (3.3 µs) — —
Between lower and
upper bands
Between Main
Lower and Main
Upper Bands
7 µs (4.3 µs) 7 µs (4.1 µs) — —
Other transitions (8 µs) (8 µs) — —
1. Update Rate is determined by the transition time as measured from the start of the RF transition (where the frequency, amplitude and phase are undefined)
to RF amplitude and phase settled. Latency is measured from the input trigger to RF amplitude and phase settled. For frequency transitions with typical
transition times of 2.5 us or longer, pre-pulse PDWs must be injected prior to the desired RF pulse to create clean pulses (except when using Simulation
View). Detailed descriptions of these pre-pulse PDWs can be found in the User’s Guide in the “Pre-Pulse PDW” section.
2. Optimized Mode applies when switching start frequency is not within any of the following 3 zones: (0 to 2.5 GHz) or (6.5 to 8 GHz) or (10 to 11.5 GHz), or stop
frequency is not within any of the following 2 zones: (13 to 14 GHz) or (18.5 to 20 GHz).
3. Upper sub bands include: 20.000000016 GHz to < 24.0 GHz
24.0 GHz to < 28.5 GHz
28.5 GHz to < 32 GHz
32 GHz to < 34 GHz
34 GHz to < 36 GHz
36 GHz to < 40.1 GHz
40.1 GHz to < 42 GHz
42 GHz to < 43.3 GHz
43.3 GHz to 44 GHz
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CW RF output
Output undefined
Input trigger
Latency
Transition time
Output undefined
Latency
Transition time
Figure 1. Switching speed definitions with input trigger
Switching speed for N5192A
1, 2
External LO mode, narrowband, nom External LO mode, wideband, nom
Update rate (transition time between
pulses in streaming)
101 µs 101 µs
1. For streaming mode only. Update rate refers to the transition time from the finishing of the leading pulse to the phase and amplitude settled in the following
pulse. The diagram in N5194A section doesn’t apply.
2. The N5192A does not have specified phase repeatability.