Keysight U8903B - Table 7-31 SMPTE IMD > Signal Analysis Settings Menu Description

Test Sequence Application 7
Keysight U8903B User’s Guide 339
Table 7-31 SMPTE IMD > Signal Analysis settings menu description
Menu Description
Freq Lock
Press the Freq Lock softkey to select the searching method for the upper and lower frequencies.
– Gen Lock
Selecting Gen Lock will allow the U8903B to search for the upper and lower frequencies of the input signal based on the
upper and lower frequencies of the respective generator channel. This Gen Lock method is only useful if you use the
internal audio generator.
– Custom
If you have a known input signal, you can define the upper and lower frequency values by setting the searching method
to Custom and setting the frequency value in Upper Freq and Lower Freq.
Upper Freq
Press the Upper Freq softkey to set the upper fundamental frequency value. This setting is only available when Freq Lock is
set to Custom.
Lower Freq
Press the Lower Freq softkey to set the lower fundamental frequency value. This setting is only available when Freq Lock is
set to Custom.
Sample Size
Press the Sample Size softkey to select the number of samples to be acquired for the measurement.
– 2048
– 4096
– 8192
– 16384
– 32768
– 65536
– 131072
– 262144
– 524288
–1M
–2M
Input Range
Press the Input Range softkey to configure the input range settings.
– Auto Range
Enable or disable the auto input range.
If auto range is enabled, each analog channel input range is determined automatically, based on the level of the input
signal. If the input signal level changes beyond the ranging threshold, auto range will cause the input ranging circuits to
move up or down for a proper ranging.
If auto range is disabled, you can set a fixed input voltage range for each analog input channel.
– Track 1st Ch
If Track 1st Ch is enabled, all the other channels will be set to follow the channel 1 range setting. Any changes made to
channel 1 range setting will be reproduced in the other channels. Disable the Track 1st Ch to set the individual
channels.
– Voltage Range
Set the input voltage range.