HW V4 / © 2005 – 2013 Aaronia AG, DE-54597 Strickscheid
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Manual Spectran V4
Tips and Tricks
9.
Tips and Tricks
9.1. Quick Zero-span sweep (Time Domain Mode)
A quick measurement at a fixed frequency almost on real-time is
achievable with the so-called zero-span. Should you have found a
signal at e. G. hotkey 5 (GSM900), simply set the correct center-
frequency using the cursor. Now, set Span to “0” and SwTime to 1mS.
The level at the center frequency is now continuously and quickly being
updated incl. time domain display.
Ideally suited for locating signal sources and maximums using the
“panning approach”
9.2. „Turbo“Sweep for small frequency ranges
Spectran automatically switches to a special „Turbo“ sweep mode
when certain conditions are met. In this mode, the second and all
further sweeps are once again accelerated by roughly 300%, as
various sweep parameters of up to 1280 measured samples are being
buffered. As such, performance in “Turbo” sweep mode depends on the
selected RBW filter and the Span. The maximum usable values are as
follows:
3MHz RBW = Maximum usuable Span 96 MHz
1MHz RBW = Maximum usuable Span 32 MHz
300kHz RBW = Maximum usuable Span 9,6MHz
100 kHz RBW = Maximum usuable Span 3,2 MHz and so on.
As an example, you can monitor the complete Wlan frequency range
(90MHz span) with an RBW setting of 3MHz in “Turbo sweep” mode.
