HP 8753E manual Key Definitions B-61

(Option 010 only) remembers a specified window pulse width (or step rise time) different from the standard window values. A window is activated only for viewing a time domain response, and does not affect a displayed frequency domain response.

lets you control the analyzer with the computer over HP-IB as with the talker/listener mode, and also allows the analyzer to become a controller in order to plot, print, or directly access an external disk. During this peripheral operation, the host computer is free to perform other internal tasks that do not require use of the bus (the bus is tied up by the network analyzer during this time).

The pass control mode requires that the external controller is programmed to respond to a request for control and to issue a take control command. When the peripheral operation is complete, the analyzer passes control back to the computer. Refer to the “HP-IB Programming Reference” and “HP-IB Programming Examples” chapters in the HP 8753E Network Analyzer Programmer’s GzG&e for more information.

In general, use the talker/listener mode for programming the analyzer unless direct peripheral access is required.

selects the A or B power sensor calibration factor list for use in power meter calibration measurements

is used to select the preset condition deilned by the user.

is used to define kits other than those offered by Hewlett-Packard.

enters the velocity factor used by the analyzer to calculate equivalent electrical length in distance-to-fault measurements using the time domain option. Values entered should be less than 1.

Velocity factor is the ratio of the velocity of wave propagation in a coaxial cable to the velocity of wave propagation in free space. Most cables have a relative velocity of about 0.66 the speed in free space. This velocity depends on the relative permittivity of the cable dielectric (E,) as

velocity flldOT = l/6 .

selects a menu of user settings, including preset settings that can be changed by the user.

toggles to become view setup when the analyzer is in frequency offset mode.

specifies the number of the disk volume to be accessed. In general, all 3.5 inch floppy disks are considered one volume (volume 0). For hard disk drives, such as the HP 9153A (Winchester), a switch in the disk drive must be set to de&e the number of volumes on the disk. For more information, refer to the manual for the individual hard disk drive.

Key Definitions B-61