19
offset value. For the Vpp of amplitude less than 0.2V, the real output offset is one
percent of the set offset value.
It will be more convenient using the numeric keys than the knob when adjusting
DC offset for output signal. In general case, whether DC offset is positive or
negative, DC level will rise if turning right and fall if turning left. Sign of positive
and negative will change automatically when passing through zero point.
3.2.9 Output of DC voltage： If amplitude attenuation of channel A is set to be 0
dB, the output offset value is equal to the preset offset value and it is independent of
the amplitude. If the amplitude is set to be 0V, the offset can be set arbitrarily within
the range of ±10V. The apparatus will be a DC voltage source and preset DC voltage
signal can be output.
3.2.10 Selection of waveform of channel A： There are 16 waveforms in channel A.
Press the key of 【Wave】 and the sequence number of the present waveform will be
displayed. The sequence number can be entered by the numeric keys and press the
key of 【n】 to select the required waveform. It can also be changed by the knob
conveniently. For the four common-used waveforms, press the keys of 【 Sine】
【Square】【Triang】【Ramp】 to select directly. The sequence numbers and names
of the 16 waveforms are shown in the following table.
List of names and sequence numbers of 16 waveforms
sequence
number
waveform name
sequence
number
waveform name
00 sine Sine
08
positive DC
Pos-DC
01 square Square
09
negative DC
Neg-DC
02 triangle Triang
10
all sine
commuting
All sine
03 up ramp Up ramp
11
limit sine
Limit sine
04 down ramp
Down
ramp
12
square-root
function
Exponent
05
positive
pulse
Pos-pulse
13
logarithm
function
Logarithm
06
negative
pulse
Neg-pulse
14
Half round
function
Half round
07
Stair Stair 15
sine function
Sin(x)/x
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