Appendix B
Performance Specifications
FREQUENCY
CW MODE
Output: Twenty independent, presettable CW frequencies
(F0 – F9 and M0 – M9).
Accuracy: Same as internal or external 10 MHz time base.
Internal Time Base Stability:
With Aging:
<2 x 10
-8
/day
(<5 x 10
–10
/day with Option 16)
With Temperature:
<2 x 10
-8
/
°
C over 0
°
C to 55
°
C
(<2 x 10
-10
/
°
C with Option 16)
Resolution:
1 kHz (0.1 Hz with Option 11)
External 10 MHz Reference Input: A c c e p t s e x t e r n a l
10 MHz
±
100 Hz, 0 to +10 dBm time base signal. Automat-
ically disconnects the internal high-stability time-base option,
if installed. BNC, rear panel, 50
Ω
impedance.
10 MHz Reference Output: 0.5 Vp-p into 50
Ω
,AC coupled.
Rear panel BNC; 50
Ω
impedance.
Switching Time (typical maximum): <40 ms to be within
1 kHz of final frequency.
PHASE-LOCKED STEP SWEEP MODE
Sweep Width: Independently selected, 1 kHz (0.1 Hz with
Option 11) to full range. Every frequency step in sweep range
is phase-locked.
Accuracy: Same as internal or external 10 MHz time base.
Resolution (Minimum Step Size):
1 kHz (0.1 Hz with Option 11)
Steps: User-selectable number of steps or the step size.
Number of Steps:
Variable from 1 to 10,000
Step Size:
1 kHz (0.1 Hz with Option 11) to the full fre-
quency range of the instrument. (If the step size does not
divide into the selected frequency range, the last step is
truncated.)
Dwell Time Per Step: Variable from 1 ms to 99 seconds
Switching Time (typical maximum): <15 ms + 1 ms/GHz
step size or <40 ms, whichever is less.
ALTERNATE SWEEP MODE
Sweeps alternately in step sweep between any two sweep
ranges. Each sweep range may be associated with a power
level.
MANUAL SWEEP MODE
Provides stepped, phase-locked adjustment of frequency be-
tween sweep limits. User-selectable number of steps or step
size.
PROGRAMMABLE FREQUENCY AGILITY
Under GPIB control, up to 1000 non-sequential frequencies
can be stored and then addressed as a phase-locked step
sweep. Data stored in volatile memory.
MARKERS
Up to 20 independent, settable markers (F0 – F9 and M0 –
M9).
Video Markers: +5V or –5V marker output, selectable from
system menus. AUX I/O connector, rear panel.
Marker Accuracy: Same as sweep frequency accuracy.
Marker Resolution:
1 kHz (0.1 Hz with Option 11)
Model
Frequency Range
68037B
2.0 to 20.0 GHz
68045B
0.5 to 20.0 GHz
68047B
0.01 to 20.0 GHz
68053B
2.0 to 26.5 GHz
68055B
0.5 to 26.5 GHz
68059B
0.01 to 26.5 GHz
68063B
2.0 to 40.0 GHz
68065B
0.5 to 40.0 GHz
68069B
0.01 to 40.0 GHz
68075B
0.5 to 50.0 GHz
68077B
0.01 to 50.0 GHz
68085B
0.5 to 60.0 GHz
68087B
0.01 to 60.0 GHz
68095B
0.5 to 65.0 GHz
(with usable output to 67.0 GHz)
68097B
0.01 to 65.0 GHz
(with usable output to 67.0 GHz)
MODEL SUMMARY
680XXB OM
B-1
Summary of Contents for 680 B Series
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