Tektronix 2252, Operator'S Manual, Page: 89 / 114

Operators Familiarization
This can happen if the selected trigger channel has no trigger signal applied
in NORM Trigger MODE or if the Trigger LEVEL control is not set to obtain a
triggered display. An improperly triggered display in either AUTO LEVEL or
AUTO Trigger MODE will cause the measurement readout-value to be
unstable, but no error message will be displayed.
Measurements in Single Sequence Mode
The following measurements run continuously during SGL SEQ Trigger
MODE: DC, +PEAK, -PEAK, PK~PK,K- VOLTS-H, and ih VOLTS -H, The
following run continuously in the A Horizontal MODE (with cursors}:
k- SEC -M, K- i / SEC -H, and H~ PHASE . Of the CfT measurements, only
TOTALIZE runs continuously in SGL SEQ mode.
For all other C/T measurements, including fc- s e c -*i, \<-~ i/ s e c ->|, and
\<- PHASE -H in ALT or B Horizontal MODES, one measurement cycle will be
performed and the result held in the readout display (if readout is configured
to remain on in SGL SEQ mode} each time SGL SEQ Mode is reentered.
The readout and/or cursors are displayed briefly during SGL SEQ Mode for
making a photographic record (or they may be configured to remain on - see
the discussion on Configure Menu in the Service Menu Features part of this
; section}. The displayed readout is the value of the measurement at the instant
it is displayed.
GATED + PEAK, GATED -PEAK, and GATED PK-PK measurements are not
available during single sequence mode and will be canceled if active when
SGL SEQ is selected.
B Trigger AUTO LEVEL acquisitions do not occur when the A Trigger MODE
Is SGL SEQ.
Service Menu Features
Most of the items in the SERVICE MENU are for diagnostics, troubleshooting,
and calibration. However, there are four menu selections that are also for
operational use: CONFIGURE, SELF CAL MEASUREMENTS, MAKE
FACTORY SETTINGS, and LOAD STORE/RECALL SETUPS. Press the top
and bottom m enu-item select buttons to display the SERVICE MENU.
2252 Operators
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