Tektronix NetTek YBT250, Руководство пользователя

Страница: 174 / 338

Taking Measurements
3- 72
YBT250 Field Transmitter & Interference Tester User Manual
2. Enter the specific frequency at which you want to make
measurements by tapping the keypad.
You enter a frequency by tapping a number followed by a
multiplier. You must include the multiplier (GHz, MHz, kHz, or
Hz) to complete your input. For example:
H
To enter a frequency of 370 MHz, tap 3 7 0 MHz .
H
To enter a frequency of 370.330 MHz, tap
3 7 0 . 3 3 0 MHz .
To correct a mistyped number, tap the backspace button. If you
enter a number that is outside the frequency range of the
instrument, the measurement frequency is set to the maximum or
minimum, depending on the value you entered.
To set the measurement frequency using the knob:
1. Tap the box displaying the measurement frequency ( not the Freq
(MHz) button). This assigns the knob to the measurement
frequency. The label above the knob display will change to
Freq (MHz) .
2. Tap the knob to change the measurement frequency.
H
Tap the top half of the knob to make large changes to the
measurement frequency. Tapping the knob to the right of the
circle increases the frequency. Tapping the knob to the left of
the circle decreases the frequency.
H
Tapping the arrow buttons on the lower half of the knob
makes smaller changes than tapping the top half.
What Measurements are Available
The measurements available depend on the selected signal standard
and which options are installed. Some measurements, such as
cdmaOne Code Domain Power, are not available for all standards.
All measurements require options to be installed. The option
required depends on the type of measurement and signal standard.
For information on the available measurement options, see
Appendix C.