Atec Anritsu-MG3690 Series - Manual (Page 10)

10
Internal LF and Pulse Generators (Option 27)
An internal pulse generator and two internal waveform generators are added, one provid-
ing a frequency or phase modulating signal and the other an amplitude modulating signal.
This Internal LF and Pulse Generators option can only be ordered in combination with
either FM/ΦM, AM, or Pulse options, 12, 14, and 26 respectively.
Waveforms: Sinusoid, square-wave, triangle, positive ramp, negative ramp, Gaussian
noise, uniform noise. (Check Option 10 for User-Defined)
Rate:
0.1 Hz to 10 MHz sinusoidal
0.1 Hz to 1 MHz square-wave, triangle, ramps
Resolution: 0.1 Hz
Accuracy: Same as instrument timebase ± 0.014 Hz
Waveform Outputs: Two BNC connectors on the rear panel, FM/ΦM OUT and AM OUT
Pulse Modes: Singlet, doublet, triplet, quadruplet
Pulse Triggers: Free-run, triggered, gated, delayed, triggered with delay, swept-delay
Pulse Inputs/Outputs: Video pulse and sync out, rear-panel BNC connectors
Ultra-Stable Phase Tracking (Option 36)
Option 36 enables up to three MG3690C units fitted with option 3, 3X to phase track with
a very high degree of stability. Option 36 provides additional rear panel connectors to link
internal reference signals together
100 MHz Reference Output: Provides the reference signal to drive up to two other
MG3690C. All must have Option 36 and either option 3 or 3x. This signal is only intended
for use with other Option 36 instruments.
100 MHz Reference Input: Accepts the 100 MHz reference signal from another MG3690C
fitted with Option 36. This input is only intended for use with other Option 36 instruments.
Phase Drift: < ± 1º over 5 seconds (typical), < ± 1.5º over 100 seconds (typical), after
24 hours warm-up time.
 For 50 GHz and 67 GHz units, overshoot > 40 GHz is 20% typical at rated power.

Period must be longer than the sum of delay and width by 5 clock cycles minimum.
 Rise time and Pulse Width Compression, > 20 GHz, degrades by 2 ns,
with High Power Option 15.
* Typical
Amplitude Modulation (Option 14)
Option 14 adds amplitude modulation, driven externally via a rear panel BNC connector 50 Ω.
For internal modulation, add Internal LF and Pulse Generators Option 27.
All amplitude modulation specifications apply at 50% depth, 1 kHz rate, with RF level set
6 dB below maximum specified leveled output power, unless otherwise noted. Amplitude
Modulation is not available < 10 MHz with Option 22.
AM Depth (typical): 0-90% linear; 20 dB log
AM Bandwidth* (3 dB):
DC to 50 kHz minimum
DC to 100 kHz typical
Flatness (DC to 10 kHz rates): ± 0.3 dB
Accuracy: Reading ± 5%
Distortion: < 5% typical
Incidental Phase Modulation (30% depth, 10 kHz rate):
<0.2 radians typical
External AM Input: Log AM or Linear AM input, rear-panel BNC, 50 Ω input impedance.
For internal modulation, add LF Generator Option 27.
Sensitivity:
Log AM: Continuously variable from 0 dB per volt to 25 dB per volt.
Linear AM: Continuously variable from 0% per volt to 100% per volt.
Maximum Input: ± 1 Vpk
*Typical below 2.2 GHz, when ordered with Options 4 and 15.
Pulse Modulation (Option 26)
Option 26 adds pulse modulation, driven externally via a rear panel BNC connector, TTL.
For internal modulation, add Internal LF and Pulse Generators Option 27.
Pulse modulation specifications apply at maximum rated power, unless otherwise noted.
Pulse modulation is not available < 10 MHz with Option 22.
On/Off Ratio: > 80 dB (> 70 dB with high power Option 15)
Minimum Leveled Pulse Width:
100 ns, ≥1 GHz
1 µs, <1 GHz
Minimum Unleveled Pulse Width: < 10 ns
Level Accuracy Relative to CW (100 Hz to 1 MHz PRF):
± 0.5 dB, ≥ 1 µs pulse width
± 1.0 dB, < 1 µs pulse width
Pulse Delay (typical): 50 ns in External Mode
PRF Range:
DC to 10 MHz, unleveled
100 Hz to 5 MHz, leveled
External Input: Rear-panel BNC. For internal modulation, add Pulse Generator Option 27
Drive Level: TTL compatible input
Input Logic: Positive-true or negative-true, selectable from modulation menu.
Pulse
Parameter
Selectable Clock Rate
Narrow (100 MHz) Wide (10 MHz)
Pulse Width 10 ns to 160 ms 100 ns to 1.6 s
Pulse Period  100 ns to 160 ms 600 ns to 1.6 s
Variable Delay
Singlet 0 ms to 160 ms 0 s to 1.6 s
Doublet 100 ns to 160 ms 300 ns to 1.6 s
Triplet 100 ns to 160 ms 300 ns to 1.6 s
Quadruplet 100 ns to 160 ms 300 ns to 1.6 s
Resolution 10 ns 100 ns
Accuracy 10 ns (5 ns typical) 10 ns (5 ns typical)
Frequency
Range
Rise and Fall
Time
(10% to 90%)
Overshoot
Pulse Width
Compression
Video
Feedthrough
≥ 10 MHz to < 31.25 MHz
(Opt. 4)
400 ns* 33%* 40 ns* ± 70 mV*
≥ 31.25 MHz to < 125 MHz
(Opt. 4)
90 ns* 22%* 12 ns* ± 130 mV*
≥ 125 MHz to < 500 MHz
(Opt. 4)
33 ns* 11%* 12 ns* ± 70 mV*
≥ 500 MHz to < 2200 MHz
(Opt. 4)
15 ns* 10% 12 ns* ± 50 mV*
≥ 10 MHz to < 1000 MHz
(Opt. 5)
15 ns, 10 ns* 10% 8 ns* ± 30 mV*
≥ 1 GHz to < 2 GHz
(Opt. 5)
10 ns, 5 ns* 10% 8 ns* ± 30 mV*
≥ 2 GHz to 67 GHz  10 ns, 5 ns* 10%  8 ns* ± 30 mV*
10 MHz out
10 MHz in
100 MHz out
100 MHz in
100 MHz in
Ultra-Stable
between RF Outputs Phase