AM-48 Test Set (18-0015) Operating Instructions
0015-S07
7-
Table 7-2. Steps for [∆] and [∇] Keys
PARAMETER MOMENTARY
PRESS STEP
CONTINUOUS
PRESS STEP
Frequency 10 Hz 100 Hz
Level 0.1 dB 1.0 dB
Time 0.1 minute 1.0 minute
Note that in changing a level, the [∆] key steps mathematically more
positive and the [∇] key steps mathematically more negative . Foe
example, if a negative level is stepped down with the [∇] key, the
value of the number itself will become larger.
7.7 Memory
Parameter Values Stored in Memory . Some user-programmable
parameter values are stored in
volatile memory and others are stored
in
non-volatile memory . Table 7-3 lists the variable parameters and
indicates in which memory they are stored. General information
about the two (2) types of memory is given below:
1.
Volatile Memory . User-set values stored here will be stored as
long as the AM-48 power is on or until changed by the user.
When power is turned off or times out (after turning on with the
momentary power switch), the user-set volatile memory values
will be lost and revert to the
default values.
2. Non-Volatile Memory . Values stored here will stay stored even
if AM-48 power is turned off. They will remain until changed
to another value by the user. Also stored in non-volatile
memory are the results and the parameter settings of the last
timed impulse noise or transient test. Note that the timed test
information is not stored in non-volatile memory unless the test
is actually run.
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