Auxiliary Input; Introduction; Automated Routing; Default Settings - Fluke 9500B User Handbook Manual

4.15

Auxiliary Input

4.15.1

Introduction

This sub section is a guide to the use of the
9500B to generate variable width pulses for
the testing trigger timing circuitry within an
Oscilloscope
For those users who require more detailed
instructions for interconnections, and
manipulating the front panel controls, refer to
sub-sections 4.2, 4.3 and 4.4.
Section 4.15 is divided into the following sub-
sections:
4.15.1 Introduction .................................................. 4.15-1

4.15.2 Automated Routing ....................................... 4.15-1

4.15.3 Default Settings ............................................ 4.15-1

4.15.4 Menu Selections ........................................... 4.15-1

4.15.4.1 Retained Channel Memory ........... 4.15-1

4.15.5 Auxiliary Input Operation .............................. 4.15-1

4.15.5.1 Bottom Screen Keys ..................... 4.15-1
4.15.6 Using the 9500B for Automated Routing of
User-Specific Calibration Signals to
UUT Oscilloscope Input Channels ................ 4.15-2
4.15.6.1 Introduction .................................. 4.15-2
4.15.6.2 Interconnections ........................... 4.15-2
4.15.6.3 User's Signal Source, 9500B and
UUT Scope Setup ......................... 4.15-2
4.15.6.4 Sequence of Operations ............... 4.15-2
4.15.2 Automated Routing
Despite the huge flexibility if the 9500B, it is
sometimes required to apply signals from user's
equipment to the inputs of a UUT oscilloscope,
for specific calibration or test purposes.
With the 9500B Auxiliary Input selected,
wideband passive routing is available from a
rear-panel 50Ω SMA input through to the
selected 9500B channel output, using 9500B
front panel controls.
No trigger pickoff is provided, and internal
triggers are not available.
Descriptions assume 9500B/1100
4.15.3 Default Settings
When Manual mode is selected the system
defaults into DC/Square function and shows
the DC/Square function initial menu screen.
The Auxiliary Input function is accessed by
first pressing the 'Aux' key on the right of the
'OSCILLOSCOPE CALIBRATOR' panel,
then pressing the
AUX IN
right of the screen.
Whenever the Auxiliary Input screen is opened,
except on recovery from a standby period, it
will appear as follows (for details of non-
volatility, refer also to para 4.5.3.6):
OFF SIGNAL CH1 1MΩ
AUX
IN
Auxiliary Input
±4Ø V pk MAX
TODAY'S DATE TIME
4.15.4 Menu Selections
Signal Channel selection, Trigger Channel
selection, Cable selection and Trigger Ratio all
operate in the same way as in DC/Square
function. Refer to paras 4.5.3.
Note: Without Option 5, only one signal
channel and one trigger channel is
available.
4.15.4.1 Retained Channel Memory
Refer to para 4.5.3.6.
Section 4: Using the Model 9500B — Auxiliary Input
4.15.5
4.15.5.1
CHANNEL Permits the AUX INPUT signal to
SELECT
soft key on the
CHANNEL
SELECT
Auxiliary Input Operation
Bottom Screen Keys
be routed to any of the five heads,
allowing selection of signal channel
and expected load only (paras
4.5.3).
continued overleaf →
4.15-1