Fluke 8505A - Page 12

8505A
Table
2-1.
Controls,
indicators, and Connectors (cont)
ITEM NAME
DESCRIPTION
17 Status Annunciators SAMPLE
flashes
to show
a new reading in progress.
FILTER
lights
whenever
slow filter is selected.
AUTO
lights for Autoranging.
EXT lights
when External
Reference is enabled
(disables Scaling).
AVG/CAL
lights
(steady) for Averaging
or flashes for
Calibration mode.
ZERO
lights when
a V DC or
OHMS zero correction
value is in use.
OFFSET
lights
when Offset mode
is enabled.
SCALE
lights when
Scaling mode
is selected (disables
Ext Ref).
PEAK lights
when Peak
mode is enabled.
REMOTE
lights
when the multimeter
is controlled
through a remote
interface.
18 POWER Switch Push ON/push OFF. The Calibration
switch (item
24)
must be off before
cycling power on or off.
19
Scan
Advance Output
TTL
compatible output signals to external
scanner (50-ohm
output
impedance).
20
Chassis
Ground Binding post for
ground connections.
21
Remote Interface Access
Port
Connector on optional remote
interface module accessible here.
22
Power
Connector Three-prong
connector accepting line cord with ground
wire.
23
Line Fuse
Use
ViA
Slow Blow for
100 or 120V ac, !4A Slow Blow for
220
or 240V
ac.
Refer
to Fuse
Replacement in Section 4.
24
Calibration
Switch
Activates
Calibration mode (AVG/CAL)
annunciator flashes).
25
Externa! Trigger Input
Enabled
by
front panel MANUAL/EXTERNAL
push button.
26 Rear Analog Input Connection
Alternate connections for ail front panel inputs
—
enabled when
Rear
Input Selector on front panel is pushed in. EXT REF HI and LO
inputs are also included, but are not
switched
by the Rear Input
Selector.
27
Rear Input
Fuse
Use AGC 1.5A.
2-15. Required Hardware
2-16.
The multimeter
must be equipped with the
following modules for standard
operation (dc volts).
1. Controller (blank
display if
not installed)
2.
Active Filter
(Error 2 if not
installed)
3. A/D Converter (Error
5 if not
installed)
4. Isolator
(Error 9 at
power-up if not installed)
2-17. Additional modules
are necessary when using
the
multimeter in ac volts, dc current,
ac current, or resistance
2-4
functions
or for remote control.
Separate
modules
for
averaging
ac
or rms
ac measurements
are available:
only
one of these modules may
be installed at one
time.
If it is
necessary to check, install
or replace modules,
refer to
Module Installation
and Removal procedures
in
Section
4.
2-1
8. An “Error
9”
indication appears
in the multimeter
display
whenever
an optional function is
selected
and the
respective function module
is faulty or missing.
At
power-
up, the multimeter identifies
all installed
options
by
displaying “CXXXXXX” (“X”
=
Option number).
An
“8”
in the exponent
display identifies an installed
Isolator.