User`s guide

User’s and Service Guide Supplement 5
E4438C Option HEC
Instrument Setup
Instrument Setup
E4423B or E4433B External Clock
Set the External Clock as follows:
[Frequency] [400 MHz]
[Amplitude] [0 dBm]
[RF On] (toggle the hardkey)
NOTE The E4438C Option HEC sample rate for the DUT’s
Ext Clk Freq = 4 × (Arb sample rate).
E4438C Option HEC
Set the E4438C Option HEC as follows:
[Preset]
[Frequency] [1 GHz]
[Amplitude] [0 dBm]
[Mode] Dual ARB > Select Waveform. Using the arrow key select SINE_TEST_WFM on the
display, then Select Waveform (*NONE*).
ARB On (toggle the softkey)
[RF On] (toggle the hardkey). Refer to Figure 3.
Figure 3 E4438C Option HEC: ARB On and RF On
RF On
ARB On