Operation
NOTE
To select items from a
menu,
simply
press the vertical mode button that
has the same position
as
the
desired
item
in the menu.
3. Select CONFIGURE from the menu.
4.
Select PROBE from the menu.
5. Finally, select the function to be performed with each probe ID by
pressing the appropriate MODE button. If
AUTO
Setup function is
selected,
any measurement assigned to the AUTO Setup is also
performed.
The following function is available for instruments with serial numbers
B049999 and below with firmware version 10 and below or for instruments
with serial numbers B050000 and above with firmware version 1 and below
(see Appendix
A
- EXER04 to determine firmware version). Pressing the probe
identification button on any Tek probe will shift the associated trace and replace
the associated scale factor with ID. If the probe identification is pressed twice in
0.5 second, the Auto Setup function is activated. Any measurement assigned to
the Auto Setup function is also performed.
Vertical
For voltage measurements, set VOLTS/DIV
VAR
fully clockwise. For best accuracy,
set VOLTS/DIV for the largest display possible.
Input Coupling
Use
1
MH DC input mode for most applications. This mode is compatible
with the standard accessory, high-impedance probes and it displays logic levels
and dc levels of static signals. Use the pair of buttons near the CH 1 and CH 2
inputs to select input coupling. CH 3 and CH 4 inputs are fixed at
1
MH DC.
GND input mode shows where the
0-volt
level will be displayed with
DC coupling.
Use AC coupling for the special cases where you need to see small signals
on large dc voltages.
Use the 50 Q DC input mode for the best possible vertical performance with
active probes,
50-D,
signal sources, and low-impedance passive probes. A
low-impedance probe can present less than 2 pF load to the signal-source, in
parallel with 500 Cl or 5000 fi with 10X or 100X attenuation.
2-4
2465B/2455B/2445B Operators
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