AM-48 Test Set (18-0015) Unit Description
0015-S03
-17
6
9
[START], [STOP]. These keys are used in the IMPLS
(impulse noise) and TRANS (transients, i.e., impulse noise,
phase hits, gain hits, and dropouts) modes to stop/start the
timed test. See ¶7.24 for information on timed tests. The
[START][STOP] functions are in operation only when data is
displayed, i.e., not when a user-entered parameter is displayed.
With a user-entered parameter displayed, these same keys take
on the functions explained for number 7 and 8.
7
8
[∆∆
∆∆
] / [∇]. Press [∆] or [∇] to step the value of any variable
number displayed either up or down. Hold down [∆] or [∇] for
one (1) second to enable auto-repeat mode and step in
increments ten (10) times the normal increments. See Table
7-2 for the values of the increments, depending on the
parameter.
3.7 Display
Figure 3-7 shows the AM-48 liquid crystal display:
1. The top line in Figure 3-7 shows all the possible units of
measurement. The units of measurement appear as appropriate
to label the value(s) displayed in the main display field. Time
and Count parameters do not show the units on the display.
2. The main display field has nine (9) 7-segmented characters with
decimal points. The prompts that appear on the display are
"pseudo-alpha" because of the limitations of the 7-segmented
characters. There are three (3) possible types of display fields,
as explained in ¶7.4.
3. Below the main display field are the menus for the three (3)
cursors, shown in detail in Table 3-2.
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