1004 Hz Data Display; Variable Frequency Generator (Var Hz); Var Hz Parameter Display/Adjustment - AMERITECH AM5 Instruction Manual

Wideband transmission test set
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AM5(e) Classic Instruction Manual
9.2.1
1004 Hz Data Display: Figure 9-3 shows a –20 dBm level and 1004 Hz
frequency
displayed in the left and right display windows. This figure also
shows the level (LEVL) parameter which may be set with the PARAMeter
SELect key.
9.2.2
1004 Hz Parameter Display/Adjustment: Figure 9-3 also shows the level
parameter. The level is common to all SEND functions and is shown at a
setting of –20 dBm. The display of level permits changes to be made while the
signal is being sent. Level changes affect all SEND functions.
9.3

VARIABLE FREQUENCY GENERATOR (VAR Hz)

The Variable Frequency generator can be selected to send out any frequency within the
range of the AM5(e) unit. This generator is very flexible and may be adjusted while a
signal is being sent. Both level (LEVL) and FREQuency may be set.
9.3.1
VAR Hz Data Display: Figure 9-4 shows a 10 dBm level and 1.004 kHz
frequency display. The figure also shows the level and frequency parameter
displays. Both level (LEVL) and FREQuency may be set after they have been
displayed with the PARAMeter SELect key.
9.3.2
VAR Hz Parameter Display/Adjustment: The level and frequency parameters
(Figure 9-4) are displayed in sequence as the PARAMeter SELect/EnTeR key is
pressed, then the data is displayed again.
While either parameter is displayed, it may be adjusted with the arrow keys.
The change in generator level or frequency occurs immediately; it is not
necessary to step to the next parameter or data.
The FREQuency change with the up- or down-arrow keys (without using the
flashing-digit mode) and the display depend on the range being set, and
whether the key is pressed momentarily or pressed-and-held for greater than
one (1) second. A value from each FREQuency range is illustrated in Figure 9-
4. The following table shows the fixed leading– zeroes, decimal point, and the
digit (d) which can be changed for each range. To change any single digit of
frequency, press the left-arrow key then use the up- or down-arrow keys in the
flashing-digit mode.
Frequency Range
20 Hz to 99 Hz
100 Hz to 999 Hz
1000 Hz to 9999 Hz
10 kHz to 99.99 kHz
100 kHz to 120 kHz
(200 kHz for –200 models)
NOTE: If a value is set outside the range of the unit, it will be automatically set to the closest
limit after PARAMeter SELect is pressed to display the data.
November 19, 1997
(18-0047)
Press Once
Press-and-Hold
10 Hz (0.0dx)
100 Hz (into next range)
10 Hz (0.xdx)
100 Hz (0.dxx)
10 Hz (x.xdx)
100 Hz (x.dxx)
10 Hz (xx.xd)
100 Hz (xx.dx)
100 Hz (xxx.d)
1 KHz (xxd.x)
Page 9-4
SEND FUNCTIONS
VAR Hz

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