Tektronix TriMode P7700 Series User Manual

designed for minimal coupling
from any signal present on the B
input within the A input isolation
performance of the probe.
B-GND mode. The B-GND mode is
used for making single-ended
measurements with the probe B
input. The probe ground input
connects the probe tip and main
cable shield. The B-GND Mode is
designed for minimal coupling
from any signal present on the A
input within the B input isolation
performance of the probe.
(A+B)/2 mode. The (A+B)/2 Mode
is used for making common
mode measurements on a
differential signal and represents
a capability that previously could
only be made using oscilloscope
math on multiple channels. For a
differential signal, the common
mode measurement indicates the
DC bias level and also shows the
degree of asymmetry between the
A and B inputs. Since the (A+B)/2
Mode measures the average
between the A and B input
signals, it eliminates any
complementary differential signal
voltage, within the DMRR
performance capability of the
probe. This measurement also
requires a ground connection to
the probe.
Selecting the offset voltage
You can set both the A and B offset voltages to levels that are common for all input modes.
Offset voltages may be automatically generated by the probe and can be set automatically using the Auto Offset Mode
button and two mode selection buttons in the Offset section of the Probe Setup screen panel. You can also enter specific
offset values directly in the Offset fields.
You can enter specific offset values directly in the Offset fields.
There are four manual offset voltage value entry fields which also display the current offset voltage settings. An offset
voltage entry field is activated for adjustment by clicking in taping the setting window. A single click tap activates both the
setting window and the general purpose knobs on the oscilloscope front panel. A second click tap in the setting window
when activated also brings up a keypad entry window. Although all four offset voltage value entry fields are active, only two
of the control pairs are independent. The manual controls interact with each other as follows:
Adjusting the A or B settings affects the Differential and Common settings
• Differential = (A – B)
Basic operation
P7700 Series TriMode™ Probes 20

Tektronix TriMode P7700 Series Specifications

General

Brand	Tektronix
Model	TriMode P7700 Series
Category	Measuring Instruments
Language	English