9
Frequency Generator Multiplication/Division Ratios:
Phase Modulation:
Frequency Modulation:
Modulation
Frequency/Phase Modulation (Option 12)
Option 12 adds frequency and phase modulation, driven externally via a rear panel BNC
connector, 50
Ω
. For internal modulation, add Internal LF Generator and Pulse Generator
Option 27. Frequency/Phase Modulation is not available <10 MHz with Option 22.
For the most accurate FM and
Φ
M measurements, Bessel Null methods are used.
When verifying FM and
Φ
M, the use of the “carrier null” technique is recommended.
Measured residual FM effects must be subtracted from modulation meter measurements.
Frequency Range
Divide Ratio, n
<10 MHz (Option 22)
modulation not available
≥
10 to
≤
15.625 MHz (Option 4)
256
>15.625 to
≤
31.25 MHz (Option 4)
128
>31.25 to
≤
62.5 MHz (Option 4)
64
>62.5 to
≤
125 MHz (Option 4)
32
>125 to
≤
250 MHz (Option 4)
16
>250 to
≤
500 MHz (Option 4)
8
>500 to
≤
1050 MHz (Option 4)
4
>1050 to
≤
2200 MHz (Option 4)
2
>10 to
≤
2000 MHz (Option 5)
1
>2 to
≤
20 GHz
1
>20 to
≤
40 GHz
1/2
>40 to
≤
67 GHz
1/4
Parameter
Modes
Conditions
Specifications
Conditions
Specifications
for all Frequencies other than <2.2 GHz with Option 4
for Frequencies <2.2 GHz with Option 4
Deviation
Locked
Rate= 1 kHz to 8 MHz
± [Lesser of 10 MHz or 300 *
(mod rate)]/n
Rate = 1 kHz to (Lesser of
8 MHz or 0.03 * Fcarrier)
±[Lesser of 10 MHz or
300 * (mod rate)]/n
Locked Low-noise
Rate= 50 kHz to 8 MHz
±[Lesser of 10 MHz or
3 * (mod rate)]/n
Rate = 50 kHz to (Lesser of
8 MHz or 0.03 * Fcarrier)
±[Lesser of 10 MHz or
3 * (mod rate)]/n
Unlocked Narrow
Rate= DC to 8 MHz
±10 MHz/n
Rate = DC to (Lesser of
8 MHz or 0.03 * Fcarrier)
±(10 MHz)/n
Unlocked Wide
Rate= DC to 100 Hz
±100 MHz/n
Rate = DC to 100 Hz
±(100 MHz)/n
Bandwidth (3 dB)
Locked
1 kHz to 10 MHz
1 kHz to (Lesser of 10 MHz or
0.03 * Fcarrier)
Locked Low-noise
30 kHz to 10 MHz
30 kHz to (Lesser of 8 MHz or
0.03 * Fcarrier)
Unlocked Narrow
DC to 10 MHz
DC to (Lesser of 10 MHz or
0.03 * Fcarrier)
Unlocked Wide
DC to 100 Hz
DC to 100 Hz
Flatness
Locked
Rate= 10 kHz to 1 MHz
±1 dB relative to 100 kHz
Rate = 10 kHz to (Lesser of
1 MHz or 0.01 * Fcarrier)
±1 dB relative to 100 kHz
Accuracy
Locked and Low-noise
Unlocked Narrow
Rate= 100 kHz sinewave
Int. or 1 Vpk Ext.
10% (5% typical)
Rate= 100 kHz sinewave
Int. or 1 Vpk Ext.
10% (5% typical)
Incidental AM
Locked and Low-noise
Unlocked Narrow
1 MHz Rate, ±1 MHz Dev.
<2% typical
Rate and Dev.= Lesser of 1 MHz
or 0.01 * Fcarrier
<2% typical
Harmonic Distortion
Locked
10 MHz Rate, ±1 MHz Dev.
<1%
Rate = 10 kHz, Dev.= ±(1 MHz)/n
<1%
External Sensitivity
Locked
Locked Low-noise
Unlocked Narrow
Unlocked Wide
(±1V maximum input)
±(10 kHz/V to 20 MHz/V)/n
″
″
±(100 kHz/V to 100 MHz/V)/n
(±1Vpk maximum input)
±(10 kHz/V to 20 MHz/V)/n
″
″
±(100 kHz/V to 100 MHz/V)/n
Parameter
Modes
Conditions
Specifications
Conditions
Specifications
for all Frequencies other than <2.2 GHz with Option 4
for Frequencies <2.2 GHz with Option 4
Deviation
Narrow
Rate= DC to 8 MHz
± [Lesser of 3 rad or
(5 MHz/mod rate)]/n
Rate = DC to (Lesser of
8 MHz or 0.03 * Fcarrier)
±[Lesser of 3 rad or
(5 MHz/mod rate)]/n
Wide
Rate= DC to 1 MHz
±[Lesser of 400 rad or
(10 MHz/mod rate)]/n
Rate = DC to (Lesser of
1 MHz or 0.03 * Fcarrier)
±[Lesser of 400 rad or
(10 MHz/mod rate)]/n
Bandwidth (3 dB)
Narrow
DC to 10 MHz
DC to (Lesser of 10 MHz or
0.03 * Fcarrier)
Wide
DC to 1 MHz
DC to (Lesser of 1 MHz or
0.03 * Fcarrier)
Flatness
Narrow
Rate= DC to 1 MHz
±1 dB relative to 100 kHz
Rate = DC to (Lesser of 1 MHz
or 0.01 * Fcarrier)
±1 dB relative to 100 kHz rate
Wide
Rate= DC to 500 kHz
±1 dB relative to 100 kHz
Rate = DC to (Lesser of 500 kHz
or 0.01 * Fcarrier)
±1 dB relative to 100 kHz rate
Accuracy
Narrow and Wide
100 kHz Internal or
1Vpk External, sine
10%
100 kHz Internal or
1Vpk External, sine
10%
External Sensitivity
Narrow
Wide
(±1V maximum input)
±(0.0025 rad/V to 5 rad/V)/n
±(0.25 rad/V to 500 rad/V)/n
(±1Vpk maximum input)
±(0.0025 rad/V to 5 rad/V)/n
±(0.25 rad/V to 500 rad/V)/n
