Tektronix TAS 200, Инструкция по эксплуатации

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TAS 200 Series Performance Verification
Bench Test Instruments and Handheld Oscilloscopes Basic Service
19
Cursor Check
The following checks verify the cursor accuracy of your oscilloscope.
To check cursor
∆
T measurement accuracy, implement the following steps.
1. Set up the oscilloscope as follows:
VERTICAL MODE CH1 (CH2)
HORIZONTAL SEC/DIV 1 ms
2.
Press and hold the oscilloscope CURSOR ON/OFF push switch to activate
the cursors.
3. If not already displayed, press and hold the
∆
V/
∆
T 1/
∆
T push switch until
two vertical cursors appear on the display.
4. Toggle the TRACKING
◊
-- O
(
REF
)
switch to select only the
◊
cursor.
5. Position the
◊
cursor 4 divisions to the left of the display vertical center with
the CURSOR POSITION switch.
6. Toggle the TRACKING
◊
-- O
(
REF
)
push switch to select only the O cursor.
7. Position the O cursor 4 divisions to the right of the display vertical center
with the CURSOR POSITION switch.
8.
Verify that the
∆
T readout at the top-left corner of the display reads between
7.72 and 8.28 ms.
9. Set the VERTICAL MODE switch to CH2 and repeat steps 4 through 8 for
CH 2.
To check cursor
∆
V measurement accuracy, implement the following steps.
1. Set up the oscilloscope as follows:
VERTICAL MODE CH1 (CH2)
VERTICAL VOLTS/DIV 1 V
2. Press and hold the oscilloscope
∆
V/
∆
T 1/
∆
T push switch until two
horizontal cursors appear on the display.
3. Toggle the TRACKING
◊
-- O
(
REF
)
switch to select only the
◊
cursor.
4. Position the
◊
cursor 3 divisions above the display horizontal center with the
CURSOR POSITION switch.
5.
Toggle the TRACKING
◊
-- O
(
REF
)
push switch to select only the O cursor.
∆
T Measurement
Accuracy
∆
V Measurement
Accuracy