Table of Contents
Advertisement
Sweep and Trigger Keys
DESCRIPTION
Continuous, single, or manual sweeps and internal, external or power line triggering are controlled by
these keys. Additionally, display blanking, penlift, and three diagnostic functions are enabled by
adding the SHIFT prefix to these keys.
PANEL LAYOUT
FUNCTIONS
[CONT] (HP-IB:
SI) allows continuous sweep-retrace-sweep-retrace cycling of the HP 8340B/41B.
The sweep is initiated by one of the TRIGGER functions, as explained later in this Figure, while the
sweep speed is controlled by the [SWEEP TIME] function as explained in Figure 3-7.
[SHIFT] [CONT] (HP-IB:
SHS11 disables displays, SHS10 re-enables displays) blanks (turns off) all
diplays on the HP 8340B/41B. Although the displays are blanked, the functions that are normally
shown in the displays can still be changed in the usual manner, and the changed values will be shown
when the displays are reactivated. The displays are reactivated in one of two ways:
Press [SHIFT]
[CONT] again to restore the displays.
[SINGLE] (HP-IB:
S2) allows single sweeps of the HP 8340B/41B. Press [SINGLE] to start the
sweep, which will sweep at a rate determined by the [SWEEP TIME] function (explained in Figure 3-7).
If [SINGLE] is pressed in the middle of a single sweep, the sweep will abruptly stop and the HP
8340B/41B will retrace back to the starting point.
[SHIFT] [SINGLE] has no effect on the HP 8340B/41B.
[MANUAL] (HP-IB:
S3) allows manual sweeps. Press [MANUAL], then use the rotary [KNOB] to
manually sweep between the start/stop limits. In manual mode the HP 8340B/41B will not automati¬
cally retrace at the sweep end point (the operator must retrace), and the green LED by the SWEEP
label will not light. The resolution of the [KNOB] is 0.1% of the sweep span in either start/stop or
CF/AF mode. Frequencies in manual sweep are synthesized just as they are in CW mode.
Figure 3-11.
Sweep and Trigger Kegs (1 of 3)
3-28
Operating Information
HP 8340B/41B
Advertisement
Table of Contents
