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MODEL 164
30 MHz Sweep Generator
* 30 uHz to 30 MHz Frequency Range
* Variable Rise and Fall Times
30 uHz to 30 MHz Frequency Range
Model 164 provides an extremely
wide frequency range for both high
and low frequency applications,
30 uHz to 30 MHz. This broad range
will cover many of your generator
applications.
Model 164 is a function generator
with full trigger and gate capability
as well as a sweep generator with
internal sweep and step sweep.
Variable Rise and Fall Time
For pulse applications, Model 164
provides positive, negative and
balancedpulse outputs. Duty cycle,
rise and fall times and dc offset
® Trapezoidal Waveforms
FUNCTION GENERATORS
e Trigger and Gated Operation
e Sweep Up or Down
levels of these outputs are all inde-
pendently variable.
Trigger and Gated Operation
Single cycles or ‘’bursts’’ of cycles
of the selected waveform can be pro-
duced by triggering the generator
with an external signal or with the
manual front panel switch. Trigger
start/stop point can be adjusted to
give haversine outputs as well as
complex waveforms.
Sweep Up or Down
Besides the conventional low-to-high
frequency sweep, Model 164 will
sweep high-to-low. Sweep width is
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fully adjustable to 1000:1 and sweep
time is continuously adjustable from
10 microseconds to 100 seconds.
Sweep hold mode stops the genera-
tor atthe sweep limit so that you can
easily and accurately adjust the total
sweep width.
Incremental Frequency Steps
Step sweep is another sweep mode
onthe Model 164. The sweep width
Is divided into 10 steps, giving 11 fre-
quencies. You can step sweep
through 11 frequency steps automa-
tically or make one step with each
press of the manual trigger switch.
Steps can be up or down in frequency.
WAVEFORM ОНТРОТ АТТЕМ 146)
TRIG START STOP DE OFFSET
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B'CAL VAR OFF
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MODEL 164 FUNCTION GENERATORS
VERSATILITY 80 dB. High level O to — 50 dB and low Time Symmetry
Waveforms level — 40 to — 80 dB outputs. + 0.5% for 30 Hz to 300 kHz.
Sine V , square "|; , triangle vV ,
positive square n , negative square
ur, trapezoid V , positive trapezoid
no, negative trapezoid v ,ramp 37 \
and stair step (up and down) —.
Operational Modes
Continuous: Main generator oscillates
continuously at selected frequency.
Triggered: Generator quiescent until
triggered by an external signal, then
generates one cycle at selected
frequency.
Gated: As triggered mode, except
main generator oscillates for the dura-
tion of the external signal. Last cycle
started is completed.
Continuous Sweep: Recurring low-to-
high or high-to-low frequency oscilla-
tions. Range and rate selectable.
Triggered Sweep: Low-to-high or high-
to-low frequency oscillation with each
trigger input; then returns to initial fre-
quency after sweep.
Sweep Hold: Sweep from start fre-
quency to stop frequency and con-
tinued oscillation at stop frequency.
Sweep Burst: Main generator quies-
cent until gated, then in sweep hold
mode for duration of gate; return to
quiescent state when gate signal is
removed.
Single Step: Main generator steps to
next frequency with each trigger in
stair sequence. After 10th step,
returns to initial frequency.
GEN MODE
SWP CONT
BURST SWP
TRIG
GATED / WP
N \ 17
SWP
‚ FT
TRIG—. HOLD
== SINGLE
CONT STEP
Mode Control
Frequency Range
0.00003 Hz to 30 MHz in 11 decade
ranges with dial and frequency vernier.
Main Output
Ny y Ny, TL and \; selectable and
variable to 20 Vp-p (10 Vp-p into 509).
A, A andv to 10V peak (5V
peak into 502). DC voltage adjustable
to + 10V, 502 source. Output peak
current is 100 MA minimum for all
waveforms and de. O to 60 dB attenua-
tion in 10 dB steps with a 20 dB ver-
nier; maximum overall attenuation
DC Output and DC Offset
Waveform offser and dc output selec-
table through 50% outputs. Adjustable
between + 10V (+ 5V into 509). DC
offset and output waveform are
attenuated proportionately by the
attenuator.
Sync Output
Approximately O to + 4V into open cir-
cuit; 509 source. Rise and fall times
typically 10 ns into 5092. Sync
waveform normally square is rec-
tangular with SYMMETRY control on.
Sweep
Sweep/Step Time: 10 us to 100s in 7
ranges selectable.
Sweep Output
Sweep Signal: 0 to + 5V ramp or stair
step.
Source Impedance: 60092.
GCV—Generator Control Voltage
0 to + 5V output proportional to main
generator frequency
Source Impedance: 600%.
VCG—Voltage Controlled Generator
Up to 1000:1 frequency change with
external O to + 5V signal. Upper fre-
quency is limited to maximum of
selected range.
Input Impedance: 5 kQ.
Slew Rate: 2% of range per us.
Linearity: + 0.5% for 0.0003 Hz to
3 MHz.
Symmetry Control
Symmetry of all waveform outputs is
continuously adjustable from 1:19 to
19:1. Varying symmetry provides
variable duty cycle pulses, sawtooth
or nonsymmetrical trapezoidal wave-
forms.
NOTE: When SYMMETRY control is used,
indicated frequency is divided by approxi-
ately 10.
Slope and Width Control
For trapezoidal waveforms \, , A
and v only. Ratio of period to rise or
fall time is variable from 2:1 (triangle)
to greater than 100:1 with 12 ns
minimum rise and fall time.
Trigger and Gate
Input Range: 1V p-p to + 50V.
Impedance: 10 k, 33 pF.
Pulse Width: 25 ns min.
Repetition Rate: 20 MHz max.
Adjustable Triggered Signal Start/
Stop Point Approximately:
— 90° to + 90° to 3 MHz.
— 90° to 0° for 3 to 30 MHz.
FREQUENCY PRECISION
Dial Accuracy
+(1% of setting + 1% of full scale)
or 0.0003 Hz to 300 kHz.
+ (3% of setting + 2% of full scale)
for 300 kHz to 30 MHz.
+ 1.0% for 0.0003 to 30 Hz.
AMPLITUDE PRECISION
Amplitude Change With Frequency
Sine variation less than:
+ 0.1 dB to 300 kHz.
+0.2 dB to 3 MHz.
+ 2.5 dB to 30 MHz.
Amplitude Symmetry
1% of amplitude range to 3 MHz.
Step Attenuator Accuracy
+ 0.25 dB per 10 dB step.
WAVEFORM CHARACTERISTIC
Sine Distortion (Continuous Mode)
<0.5% for 10 Hz to 100 kHz.
<1.0% for 0.0003 Hz to 300 kHz.
All harmonics at least 26 dB down to
30 MHz.
Triangle Linearity
Greater than 99% for 0.0003 to 300
kHz.
Square Wave Rise and Fall Time
Less than 12 ns terminated into 509
load.
Total Aberrations
Less than 5%.
GENERAL
Stability
Amplitude, dc offset and frequency.
Short Term: + 0.05% for 10 minutes.
Long Term: + 0.25% for 24 hours.
Environment
Specifications apply at 23° +5°C.
Instrument will operate from 0° to
+ 55°C.
Dimensions
36.8 cm (14% in) wide; 13.3 cm
(5% in.) high; 34.3 em (13% in.) deep.
Weight
6.8 kg (14.9 Ib) net; 8.6 kg (19 Ib)
shipping.
Power
90 to 110V, 105 to 125V, 180 to 220V
or 210 to 250V; 50 to 400 Hz: less than
50 VA.
NOTE: Specifications apply from 10 to 100%
of a selected frequency range with SYM-
METRY control at OFF. Symmetry and vernier
affect frequency calibration. Maximum possi-
ble asymmetry is a function of frequency
setting.
FACTORY/FOB
San Diego, CA
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