Teledyne LeCroy PXA125 - Manual (Page 81)

User Manual PXA125
ArbConnection 3-67
Figure 3-39. The Modulation Panel
FSK The FSK group contains parameters for controlling the FSK function.
To turn the FSK function on and off, click on the State button in this
group. There are two other sub-groups in the FSK block: Parameters,
and Mode.
Mode – The Mode group lets you select between two shift options:
hop and ramped. In hop mode, the sample clock hops to the shift
frequency without delays. In ramped mode, the sample clock ramps to
the shift frequency at a rate determined by the Ramp Time parameter.
Click on the option you prefer to select between hop and ramped
modes.
Parameters – Allow adjustment of Ramp Time and Shifted Sample
Clock frequency parameters. To access the required parameter, click
on the button below parameters sub-group until the LED next to the
required parameter turns on. The value that is associated with the lit
LED is displayed on the digital display. You can use the dial,
keyboard, or the [
↑ ] [ ↓ ] keys to adjust the readout to the required
setting. After you modify the reading, press Execute to update the
PXA125 with the new reading.
Sweep The Sweep group contains parameters for controlling sweep options.
To turn the Sweep function on and off, click on the State button in this
group. There are sub-groups in the Sweep block: Parameters,
Direction, Type, Mode and Slope.
Parameters – Allow adjustment of Sweep Stop and Sweep Time. You
can also place a marker at a position programmed by the Mark