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AM5(e) Classic Instruction Manual
9.4
SWEEP GENERATOR (SWEEP)10/94 /28 (Fri) 17:03 to here.
When SWEEP is selected, the signal generator steps through a series of frequencies. The
programmed defaults starts the sweep at 304 Hz and increases in 100 Hz steps at a
three (3) -second rate until 3.004 kHz. When the 3.004 kHz stop frequency is reached,
the sweep immediately begins again, unless the zero delay is changed.
To provide an audible reference to the beginning and end of the sweep, a delay may be
programmed so that the first and last tone will have a longer duration than the other
tones.
The SWEEP function is useful for performing step-frequency tests to measure the
response/bandwidth of a circuit. A slow sweep rate within the voice-frequency range
allows an operator at the far end to note the levels as the tones are received.
9.4.1
SWEEP Data Display: Figure 9-5 shows a 0 dBm level and 1.904 kHz frequency
display. The frequency will be increasing in steps while the data is displayed.
The figure also shows the default parameter displays.
If the SF SKIP function (see 9.5) is turned ON, frequencies in the rejection band
of the SF SKIP cannot be displayed or output if they are in the range of a
SWEEP.
Any of the single tones (F1 through F4) may be selected or sent during the
sweep (see 9.6). The sweep is interrupted while the single tone is sent. When
the tone is stopped, the sweep begins again at the start frequency.
9.4.2
SWEEP Parameter Display/Adjustment: The level, start frequency, stop
frequency, step frequency, and delay parameters (Figure 9-5) are displayed in
sequence as the PARAMeter SELect/EnTeR key is pressed, then the data is
displayed again. The following table shows the abbreviations, range, and
default values for the SWEEP parameters:
Parameter
Description
Level for all SEND
functions
Start Frequency
Stop Frequency
Step Frequency
(High-limit is 200.0
kHz for AM5(e)
Classic-200)
Sweep Rate
Delay at start and stop
Frequency
NOTE: The finest resolution of sweep rate and delay is .24 seconds (based on change over
frequency) Due to this fact, the AM5(e) Classic will round the entered value to the nearest 0.24
second
November 19, 1997
(18-0047)
Display
Abbreviation
Low <default>
LEVL
- 50.0
STrT
0.020
SToP
0.020
STEP
0.020
rATE
000.1
dLAY
000.0
Page 9-6
SEND FUNCTIONS
High
<00.0>
13.0
<0.304>
120.0
<3.004>
120.0
<0.100>
120.0
200.0
<003.0>
999.9
<000.0>
999.9
LED
dBm
kHz
SEC
SEC
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