Tabor 8020, Руководство пользователя

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ple, the FREQ dimension is Hz. Display readout of 10.00
(exp)+3 tells us that the output waveform is programmed
to have a frequency of 10.00 KHz. Limits for each pa-
rameter are given in Table 3-3. The parameter is then
modified using the [MODIFIER] and the [RANGE]
push-buttons.
The parameters which can be modified are marked on
the front panel as follows:
FREQ STOP
AMPL WID (model 8021)
TIME CARR (model 8022)
OFST MARK
In addition, some parameters are accessible through the
[2nd] button. These parameters are:
ADR SWP MODE
RCL RCL MODE
STO
3-9-1. Modifier
The modifier group consists of three sets of push-buttons
each set having its top button marked with an arrow
pointing up and its bottom key marked with an arrow
pointing down. These modifier push-button control the
displayed readout within a selected range.
[x1 UP] or [x1 DOWN] push-buttons when depressed
and released once increments or decrements the least sig-
nificant digit on the numeric display. Depressing these
buttons for more than one second modifies this digit con-
stantly until the button is released or until the parameter
limit is encountered. Incrementing the [x1] above 9 carries
1 to the second digit.
The [x10 UP] or [x10 DOWN] push-buttons control
the second digit. Their operation is similar to the [x1] op-
eration. Incrementing the [x10] above 9 carries 1 to the sec-
ond digit.
The [x100 UP] or [x100 DOWN] push-buttons control
the third and the most significant digit.
3-9-2. RANGE
The [RANGE] buttons control the range of the displayed
parameter. Depressing and releasing the [RANGE UP]
or the [RANGE DOWN] buttons increases or decreases
respectively the displayed range. Depressing these but-
tons when the generator is already at its highest or lowest
range will produce no further change.
3-9-3. Parameter Limits
In general, parameters were assigned definite bounda-
ries. The instrument was design in such a way that front
panel programming, under no circumstances, may lead
to an error situation by exceeding the specified limits.
GPIB parameter programming errors are discussed in
section 4. Front panel programming permits modifica-
tion of parameters within the limits which are given in
PARAMETER LOW LIMIT HIGH LIMIT REMARKS
FREQ (frequency) 2.00 mHz 20.00 MHz
AMPL (amplitude) 10 mV 15.0 V Into 50 ohms
AMPL (dc amplitude) 0 mV +/-7.50 V DC output waveform
OFST (offset) 0 mV +/-7.00 V Amplitude dependent
WID (pulse/ramp width) 25.0 nS 9.99 S Model 8021 only
CARR (carrier) 0 % 100 % Model 8022 only
STOP (log sweep stop) 2.00 mHz 20.00 MHz
STOP (lin sweep stop) 2 counts 2000 counts Same range
TIME (sweep time) 10 mS 1000 S
T.PER (trigger period) 10 uS 1000 S
MARK (log marker freq) 2.00 mHz 20.00 MHz
MARK (lin marker freq) 2 counts 2000 counts Same range
STORE (store) 00 # 30 #
RECALL (recall) 00 # 30 #
GP ADR (GPIB address) 00 # 31 #
Tabel 3-3. Front Panel Parameter Entry Limits
Operating Instructions Model 8020
Page 3-8