Active Probes; Probe Id - Tektronix 11A32 User's Reference Manual

Operating the 11 A32 in 11300 -series mainframes
Active Probes
Using an active probe, such as the P6231, eliminates two options: AC Coupling
and 1 MD input impedance. Coupling options available when using such a
probe are Off and DC; the only Impedance available is 50 D.
Probe ID
The Probe ID section of the Utility Menu is the means of selecting how any
11300-series oscilloscope responds to an ID button-push of recommended
probes. All, or some combination of the following operations may be set to start
in response to probe ID buttons. To display the Utility Menu, press the front-
panel UTILITY button (once on 11301 or 11302 oscilloscopes, twice on 11301A or
11302A oscilloscopes). For details, see the Probe ID section of the Waveform
Acquisition subsection in the mainframe User Reference manual.
Pressing the probe ID button can initiate one or more of the following
operations:
1. Present a new display, or if that channel is already displayed, select the
existing trace. Pressing the ID button of a probe connected to an
undisplayed left or center compartment channel will cause that channel to
be displayed, unless doing so would exceed the maximum number or
traces. Unlike the 11A32 display on/off button, pressing the probe ID
button a second time will not remove the display. Probe ID button-presses
for displayed channels will do two things: a) select the trace(s) using this
channel, and b) momentarily brighten all traces using this channel.
2. Stored settings can be sequentially recalled. Pressing the probe ID button
can cause a sequential recall of stored settings. The stored settings feature
must be enabled using the Probe ID Utility menu. Settings must be stored
as explained under STORE/RECALL Major Menu in the 11301 and 11302
User Reference manual, or the 11301A and 11302A User Reference Manual.
3. The mainframe can Autoset to accommodate the input signal introduced
by. the probe. The Autoset feature can be enabled or disabled using the
Probe ID Utility menu. Autoset is the automatic setup of vertical deflection
factor, triggering, and sweep speed to produce a meaningful display, e.g.,
two to five divisions of vertical deflection and two to five repetitions of the
input signal. For more information, refer to Autoset in the 11301 and 11302
User Reference manual, or the 11301A and 11302A User Reference Manual.
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11A32 User Reference Supplement