5790B
Operators Manual
3-2
Table 3-1. Front Panel Features
Ref No. Name Function
INPUT 1 Type
“N” Connector
A Type “N” connector for dc (1000 V max) or ac (to 1 MHz, 1000 V max)
inputs. For manual transfer applications that use the Product with external
dc and ac sources, use the INPUT 2 binding posts for the dc source.
AUX
Binding Post
Connection point for a Fluke Model A40 or A40A Binding Post Current
Shunt adapter.
Note
The AUX terminal is only to be used with
the A40 and A40A shunts. See Current
Shunt Function in Chapter 4 for more
information.
GROUND
Binding Post
If the Product is the location of the ground reference point in a system, the
GROUND binding post can be used to connect other instruments to earth
ground. The chassis is normally connected to earth ground through the
three-conductor line cord instead of through the earth ground binding post.
Refer to Chapter 4 for details.
WIDEBAND
50 Ω Type “N”
Connector
[1]
A 50 Ω Type “N” connector for inputs in Wideband mode (10 Hz to 30 MHz
-Option 5790B/3 or 50 MHz - Option 5790B/5 or 5790B/AF, 7 V rms max).
This connector is only used when an optional Wideband Module is
installed.
GUARD
Binding Posts
[1]
The GUARD binding post provides an external Binding Post connection
point for the internal guard or a floating shield around sensitive
measurement circuitry. See Chapter 4 for proper use of the GUARD. The
maximum allowable potential between the GUARD binding post and
chassis ground is 10 V pk.
INPUT 2
Binding Post
A pair of five-way binding posts for connection to a binding external dc
source (1000 V max), or to an ac source posts (1000 V rms max).
Touch Screen
Display
The color touch-sensitive display shows the amplitude, frequency, and
other active conditions and messages. The lower section of the display
provides controls not available with the keys alone. The Product interface
is made up of multiple menus, described in Chapter 4.
TRIG and
EX TRIG keys
EX TRIG (External Trigger) key turns off continuous trigger mode. When
the key is pushed, the Ext Trigger ON indicator is shown in the upper
corner of the display, and the Product stops taking continuous
measurements at the active input. When the Ext Trigger indicator is off, the
Product automatically takes measurements one after another.
When Ext Trigger is ON, the TRIG key triggers a single measurement at
the active input. In continuous trigger mode, the TRIG aborts the current
measurement cycle and triggers a new measurement.
See Selecting Continuous or External (Single) Trigger in Chapter 4.
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