Model 7280
Dual Phase, Wide Bandwidth
DSP Lock-in Amplifier
General
The model 7280 DSP Lock-in Amplifier is an exceptionally
versatile instrument with outstanding performance. With direct digital
demodulation over an operating frequency extending up to 2.0 MHz,
output filter time constants down to 1 µs and a main ADC sampling
rate of 7.5 MHz it is ideal for recovering fast changing signals. But
unlike some other high frequency lock-ins, it also works in the
traditional audio frequency band.
In addition to its excellent technical specifications, it is also very
easy to use. The front panel is dominated by a large electro-luminescent
display panel, used both to show the instrument's outputs and for
adjusting its controls via a series of menus. Controls are set by a
combination of the use of the keys surrounding the display and the keypad,
while four cursor-movement keys simplify use of the graphic display menus.
Users of the SIGNAL RECOVERY (formerly
PerkinElmer/EG&G) 7260 and 7265 will find
switching to the 7280 very easy, since we've designed it with a similar
menu structure. The only significant changes are in some of the control
menus, where the better resolution of the display allows both the controls
and the instrument outputs to be shown simultaneously, for even faster
feedback on the effects of control adjustments.
Naturally, the instrument includes the extended operating modes like
dual reference, dual harmonic and virtual reference made popular by the
7260 and 7265, as well as the spectral display mode used to aid reference
frequency selection. It also includes GPIB and RS232 interfaces for remote
computer control and a range of auxiliary analog and digital inputs and
outputs. Software support is available in the form of a LabVIEW driver
supporting all instrument functions, and the Acquire™ data
acquisition software. The driver and a demonstration version of the
software, DemoAcquire, are available for download from this site.
In summary, if you need a lock-in capable of working beyond the
traditional audio frequency band but still want the drift-free performance
that only digital demodulation brings, then look no further - you have
found it in the SIGNAL RECOVERY Model 7280.
Click here
for model 7280 and 7280BFP specifications
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a trademark of AMETEK, Inc.