User’s Manual UTS1000B/T Series
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Select
Provide 10 correction factors to save,
the default: correction 1
Go To row
Select number of revised row
Insert row
Add revised point
Delete row
Delete select row at the current
Delete Correction Delete Corrected data at the current
5. Delete All: Remove all the saved revised data.
BW
Press [BW] key to enable the resolution bandwidth function, enter panel menu to control the
resolution bandwidth and video bandwidth.
RBW
（
Auto/Man
）
: Set the resolution bandwidth to distinguish two signals with similar frequency. In manual
mode, the user can change the resolution bandwidth value within the range 1Hz to 1MHz by using the
numeric key, rotary knob, direction key or touch panel menu.
Below to 1kHz, the optional bandwidth value are 1Hz, 3Hz, 10Hz, 30Hz, 100Hz or 300Hz. If the input value is
not one of these values, then select an available bandwidth value which closest to the input value. As the
resolution bandwidth decreases, the system corrects the sweep time to maintain the calibration of the
amplitude. The resolution bandwidth is also related to the sweep span, when the sweep span is reduced,
the resolution bandwidth is also reduced.
In auto-coupling mode, the video bandwidth changes along with the resolution bandwidth, thus the ratio of
the resolution bandwidth and the video bandwidth stay constant.
If the video bandwidth and resolution bandwidth are not coupled, a "#" mark will appear in the bottom left
corner of the screen next to "RBW". Press auto key to re-couple.
VBW
（
Auto/Man
）
: Set the video bandwidth to filter out ambient noise. In manual mode, user can change the
instrument's video bandwidth value from 1 Hz to 1 MHz by using the numeric key, rotary knob, direction key
or touch panel menu. If the input value is not an available bandwidth value, then select an available
bandwidth value which closest to the input value. As the video bandwidth decreases, the system increases
the sweep time to maintain calibration of the amplitude.
When the video bandwidth and resolution bandwidth are not coupled, a "#" mark will appear at the bottom
of the screen next to "VBW". Press auto key to re-couple.
VBW: 3dB RBW: Select the ratio of video bandwidth to resolution bandwidth. If the signal is similar to the
noise level and the signal response displayed on the screen is blurred, the ratio can be set to less than 1 to
reduce the noise. When reset with [Default], the ratio is set to 1.000. User can change the ratio by using the
numeric key, rotary knob, direction key or touch panel menu.
RBW Filter Type: The UTS1000B/T series supports two types of filters, Gaussian and flat top window.
Gaussian window is a kind of exponential window. The main flap is wide, so the frequency resolution is
low; no negative side flap, the first side flap attenuated to 55dB. Gaussian window is often used to
