Datasheet
60
5.20.2 Channel Selection
Press 〖Cal Channel〗softkey to cycle through calibration channel. If ‘Channel A’ is
displayed, user can calibrate for CHA. If ‘Channel B’ is displayed, user can calibrate for
CHB.
5.20.3 Frequency Calibration
After channel selected, press〖Freq Cal〗softkey to enter into frequency calibration
window. Then press〖Cal Value〗key and set it by knob or numeric keys, to make the
frequency as close to 1MHz as possible. Finally press〖Finish〗key to exit the calibration.
5.20.4 Offset Calibration
Press 〖Offs Cal〗softkey to enter into offset calibration window. Connect generator with
digital multimeter, adjust the calibration value to make the signal offset as the target
value according to calibration instruction. Press〖Next〗key or input calibration value to
enter into the next point calibration. Go on the next standard points calibration like this,
finally press 〖Finish〗key to exit the calibration.
5.20.5 Amplitude Calibration
Press 〖Ampl Cal〗softkey to enter into amplitude calibration window. Then adjust the
calibration value to make the signal output amplitude as the target value according to
calibration instruction. Press 〖Next〗key or input calibration value to enter into the next
point calibration. Go on the next standard points calibration like this, finally press
〖Finish〗key to exit the calibration.
5.20.6 Flatness Calibration
The amplitude of output signal will decrease as the frequency increasing. Therefore, you
need to calibrate for different frequency points. Amplitude flatness uses the relative
comparison method and makes the amplitude with 1MHz frequency as comparison
standard. The calibration includes 3 parts, nominal amplitude of which is 4dBm, 17.96
dBm and 11.93dBm. The step is 5MHz for output signal frequency.
Press〖Flat Cal〗softkey to enter into flatness calibration window.
(1) Calibration sequence display as 0#. Now the generator output 1MHz frequency,
4dBm amplitude reference signal. Measure the actual output amplitude by spectrum
analyzer, the result of which is taken as the first reference value. Press〖Next〗key
and sequence still shows 0#. Adjust calibration value to make the output amplitude
equals to the reference value. Go on the operation like this until the first section
flatness calibration finishes. (0# ~ 31#).