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SWEEP TRIGGERING
Sweep triggering is provided for Analog Frequency Sweep,
Step Frequency Sweep, and CW Power Sweep.
Auto: Triggers sweep automatically.
External: Accepts a TTL low-level signal of 1
µ
s width to
trigger a sweep. AUX I/O connector, rear panel.
Single: Triggers, aborts, and resets a single sweep. Reset
sweep may be selected to be at the top or bottom of the
sweep. The pen lift will activate at sweep speeds
≥
1 second.
SPECTRAL PURITY
All specifications apply to the phase-locked CW and Step
Sweep modes at +10 dBm output unless otherwise noted.
SPURIOUS SIGNALS
Harmonic and Harmonic Related (Models 68137A,
68147A, 68163A, and 68169A):
10 MHz to 50 MHz:
<–30 dBc
>50 MHz to
≤
2 GHz:
<–40 dBc
>2 GHz to
≤
20 GHz:
<–60 dBc
>20 GHz to
≤
40 GHz:
<–40 dBc
Harmonic and Harmonic Related (Models 68137A and
68147A with Option 15):
10 MHz to 50 MHz:
<–30 dBc
>50 MHz to
≤
2 GHz:
<–40 dBc
>2 GHz to
≤
20 GHz: <–50 dBc
Nonharmonics:
10 MHz to
≤
2
GHz:
<–40 dBc
>2 GHz to
≤
60 dBc:
<–60 dBc
SINGLE-SIDEBAND PHASE NOISE
(dBc/Hz)
POWER LINE and FAN ROTATION SPURIOUS
EMISSIONS (dBc)
RESIDUAL FM
(50 Hz - 15 kHz BW)
RESIDUAL FM
(Analog Sweep and FM modes, 50 Hz - 15 kHz BW)
AM Noise Floor:
Typically <–145 dBm/Hz at 0 dBm output and offsets
>5 MHz from carrier.
RF OUTPUT
Power level specifications apply at 25
°
±
10
°
C.
MAXIMUM LEVELED OUTPUT POWER
LEVELED OUTPUT POWER RANGE
Without an Attenuator:
Maximum leveled power to
–15 dBm (–20 dBm overrange).
With an Attenuator:
Maximum leveled power to
–125 dBm (–130 dBm overrange).
UNLEVELED OUTPUT POWER RANGE (typical)
Without an Attenuator:
40 dB below max power.
With an Attenuator:
150 dB below max power.
Frequency
Range
(GHz)
Offset From Carrier
100 Hz
1 kHz
10 kHz
100 kHz
0.01 to 8.4
<–70
<–78
<–86
<–90
>8.4 to 20
<–61
<–74
<–76
<–85
>20 to 40
<–55
<–68
<–70
<–79
Frequency
Range
(GHz)
Offset From Carrier
<300 Hz
300Hz to 1 kHz
>1 kHz
0.01 to 8.4
<–50
<–60
<–60
>8.4 to 20
<–46
<–56
<–60
>20 to 40
<–40
<–50
<–54
Frequency Range
(GHz)
Residual FM
(Hz RMS)
0.01 to 8.4
<120
>8.4 to 20
<220
>20 to 40
<440
Frequency Range
(GHz)
Residual FM
(kHz RMS)
0.01 to 8.4
<10
>8.4 to 20
<20
>20 to 40
<40
Model
Number
Output
Power
Output Power
with Attenuator
Option Installed
68137A
+13 dBm
+10 dBm
68147A
+13 dBm
+10 dBm
68163A
+6 dBm
+2 dBm
68169A
+6 dBm
+2 dBm
With Option 15 (High Power) Installed
68137A
+17 dBm
+14 dBm
68147A
+13 dBm, <2 GHz
+17 dBm,
≥
2 GHz
+10 dBm, <2 GHz
+14 dBm,
≥
2 GHz
PERFORMANCE
SPECIFICATIONS
B-2
681XXA OM