Fluke 123B/S Service Manual - Page 64

Input A and B Base Line Jump Test, To conform the highlighted item

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123/124 Service Manual • Using select INPUT B: ON . • Press to confirm the selection; the mark changes to I . The active setting from the next item group will be highlighted (for example I VAC ), and maintained after leaving the menu. • Press to exit the menu. During verification you must open menus, and to choose items from the menu. Proceed as follows to make choices in a menu (see Figure 4.2): • Open the menu, for example press . • Press to highlight the item to be selected in a menu. • Press to confirm the selection and to jump to the next item group (if present). Item groups in a menu are separated by a vertical line. • After pressing in the last menu item group, the menu is closed. Figure 4-2. Menu item selection ST7968.WMF If an item is selected, it is marked by I. Not selected items are marked by . If a selected item is highlighted, an then is pressed, the item remains selected. You can also navigate through the menu using you must press . . To conform the highlighted item 4.5.1 Input A and B Base Line Jump Test Proceed as follows to check the Input A and Input B base line jump: 1. Short circuit the Input A and the Input B shielded banana sockets of the test tool. Use the BB120 banana to BNC adapter, and a 50Ω (or lower) BNC termination. 2. Select the following test tool setup: • Turn Input B on (if not already on). • Press to select auto ranging (AUTO in top of display). ( toggles between AUTO and MANUAL ranging). • Press to open the SCOPE INPUTS menu. • Press to open the SCOPE OPTIONS menu, and choose : 4-6

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123/124
Service Manual
4-6
•
Using
select
INPUT B:
ON
.
•
Press
to confirm the selection; the
mark changes to
■
.
The active setting
from the next item group will be highlighted (for example
■
VAC
), and maintained
after leaving the menu.
•
Press
to exit the menu.
During verification you must open menus, and to choose items from the menu.
Proceed as follows to make choices in a menu (see Figure 4.2):
•
Open the menu, for example press
.
•
Press
to highlight the item to be selected in a menu.
•
Press
to confirm the selection and to jump to the next item group (if present).
Item groups in a menu are separated by a vertical line.
•
After pressing
in the last menu item group, the menu is closed.
ST7968.WMF
Figure 4-2. Menu item selection
If an item is selected, it is marked by
■
.
Not selected items are marked by
.
If a
selected item is highlighted, an then
is pressed, the item remains selected.
You can also navigate through the menu using
.
To conform the highlighted item
you must press
.
4.5.1 Input A and B Base Line Jump Test
Proceed as follows to check the Input A and Input B base line jump:
1.
Short circuit the Input A and the Input B shielded banana sockets of the test tool.
Use the BB120 banana to BNC adapter, and a 50
Ω
(or lower) BNC termination.
2.
Select the following test tool setup:
•
Turn Input B on (if not already on).
•
Press
to select auto ranging (
AUTO
in top of display).
(
toggles
between
AUTO
and
MANUAL
ranging).
•
Press
to open the SCOPE INPUTS menu.
•
Press
to open the SCOPE OPTIONS menu, and choose :