Agilent Technologies 08642-90224 manual Appendix a

R4odel 8642A/B Appendix A

Appendix A: G L O S S A R Y

absolute units

In the 8642A/B, absolute units are units that can be set amplitude mode. These include dBm, V, mV, uV, EMF V, EMF

directly without using the relative mV, and EMF uV.

active function

When a function is active, you do not need to select the function’s key before changing its value with either the Knob, or Step or Data keys, or the Off/On key. A function is usually indicated as active when the cursor in the display is above that function’s value.

For example, if the cursor is over the RF frequency value, you can enter a new frequency value or use the Knob or Step keys to change the value. You do not need to press the C-1 key each time a change is desired.

active function prefix

Many HP-IB codes should not be entered without being prefixed by an active function code. For a list of the active function codes and the codes that should be prefixed with an active function code, refer to Table 3-8, Signal Generator Function to HP-IB Code (page 3-32) or Table 3-9, Signal Generator HP-IB Code to Function (page 3- 3 3).

alphanumeric

The 8642A/B has an alphanumeric display; that is, the display can show both alphabetic and numeric characters.

ASCII

ASCII is an abreviation for American Standard Code for Information Interchange (pronounced “ask-eel’).

cursor

The cursor is the triangular segment above an alphanumeric character in the display. The cursor usually designates the active function and the resolution of the Knob. Cursors also indicate the status of Knob Hold and Knob Increment. Refer to Knob, page 3- 14 1.

divide bands

Divide bands are created when the Signal Generator’s frequency range of 528.750001 to 1057.5 is divided down to create its wide RF frequency range. Refer RF Frequency, page 3-39.

function

A function refers to each capability of the 8642A/B.

Key functions are labeled directly on the key that accessed the function; frequency L (FREa) ) and amplitude ( (AMPTD) ) are both key functions.

Shift key functions are labeled in blue above the key that accesses the function (for example, REF SET and REL ZERO). You can access a shift key function by first pressing the blue ISHIFT) key (which causes the display to show “SHIFT”) and then the key under the blue label. (HP-IB: each shift key function has an individual HP-IB code and should not be preceded by a shift code.)

Special functions can be selected by pressing SPCL ( (SHIFT) [-I ), and then by keying in the code number of the desired special function. Refer to Special Functions, page 3- 16 8.

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