SPECIFICATIONS
Model
1
:
AVR-3HF-B
Amplitude (into
≥ 50Ω)
2,4,7
:
<10 to 250V
Maximum output current:
5A
Rise & fall times (20%-80%) into 50Ω:
≤ 10 ns
Pulse width (FWHM):
100 ns to 100 us
Maximum PRF:
100 kHz
Max. duty cycle and
average output power
(excludes Z
OUT
=50Ω
mode on -LV units)
Standard:
4%, 50W
-XP1 option:
8%, 100W
-XP2 option:
16%, 200W
Max. duty cycle and average output
power
6
for Z
OUT
=50Ω mode on -LV units:
0.4%, 5W
Polarity
3
:
Positive or negative or both (specify).
Dual polarity not available with -XP2 option.
Output Impedance (Z
OUT
):
Standard units: < 2 Ω, approximately (i.e., nominally zero).
With -LV option: <2Ω or 50Ω, switchable
7
.
Internally-switched output attenuators:
Standard units: none.
With -LV option: internal attenuators are automatically switched in when operating in the Z
OUT
= 50Ω mode.
This permits the generation of amplitudes of < 1V into 50Ω loads. The maximum average output power
(including power dissipated in Z
OUT
and the attenuators) is limited to 5 Watts in the Z
OUT
= 50Ω mode. This
limits the maximum duty cycle, as noted above. (Higher average power ratings and duty cycles in this
mode can be provided at additional cost and with some degradation of the rise and fall times. Contact
Avtech with your special requirements.) The internal attenuators are not used in the Z
OUT
< 2Ω mode, and
the 5W limit does not apply in that mode.
Propagation delay:
≤ 150 ns (Ext trig in to pulse out)
Jitter:
± 100 ps ± 0.03% of sync delay (Ext trig in to pulse out)
Trigger modes:
Internal trigger, external trigger (TTL level pulse, > 10 ns, 1 kΩ input impedance),
front-panel “Single Pulse” pushbutton, or single pulse trigger via computer command.
In the external trigger mode, the pulse width may be set by the instrument,
or it may be set to track the input pulse width.
Variable delay:
Sync to main out: 0 to 1.0 seconds, for all trigger modes (including external trigger).
Sync output:
> +3 Volts, > 50 ns, will drive 50 Ohm loads
Gated operation:
Synchronous or asynchronous, active high or low, switchable.
Connectors:
Out, Trig, Sync, Gate: BNC
GPIB & RS-232 control
1
:
Standard feature on all -B units.
LabView drivers:
http://www.avtechpulse.com/labview
.
Ethernet port, for remote control using
VXI-11.3, ssh, telnet, & web:
Included. Recommended as a modern alternative to GPIB / RS-232.
See
http://www.avtechpulse.com/options/vxi
for details.
Settings resolution:
The resolution of the timing parameters (pulse width, delay, period) varies, but is always better than 0.15%
of (|set value| + 20 ns). The amplitude resolution is < 0.1% of the maximum amplitude.
Settings accuracy:
Typically ± 3% (plus ±1V or ± 2 ns) after 10 minute warmup. For high-accuracy applications requiring
traceable calibration, verify the output parameters with a calibrated oscilloscope
5
.
Power requirements:
100 - 240 Volts, 50 - 60 Hz
Dimensions:
100 mm x 430 mm x 375 mm (3.9” x 17” x 14.8”)
Chassis material:
Cast aluminum frame and handles, blue vinyl on aluminum cover plates
Mounting:
Any. Add -R5 to the model number to add a rack-mount kit.
Temperature range:
+5°C to +40°C
1)
-B suffix indicates IEEE-488.2 GPIB and RS-232 control of amplitude and frequency. See
http://www.avtechpulse.com/gpib
for details.
2) Lower amplitudes are possible with the -LV option, or by adding external attenuators.
3) Indicate desired polarity by suffixing model number with -P or -N (i.e. positive or negative), or -PN for dual polarity option.
4) The instrument may be used to drive resistive loads of less than 50 Ohms, as long as the maximum output current specification is not exceeded. The
rise and fall times may increase.
5) These instruments are provided with a basic calibration checksheet, showing a selection of measured output parameters. These measurements are
performed with equipment that is calibrated on a regular basis by a third-party ISO/IEC 17025:2005 accredited calibration laboratory. However,
Avtech itself does not claim any accreditation. For applications requiring traceable performance, use a calibrated measurement system rather than
relying on the accuracy of the pulse generator settings.
6) Including the power dissipated in Z
OUT
and internal attenuators.
7) Note that the maximum output voltage falls by a factor of 2 when Z
OUT
= 50Ω (on units with the -LV option)
and
the load resistance = 50Ω, due to the
resistor-divider effect.
6
