5725A Operating Functions And Modes; Standby - Fluke 5725A Instruction Manual

3-6. 5725A Operating Functions and Modes

Both the 5700A and 5725A can produce fatal voltages. boosted
voltage operation produces high voltage at higher current
levels than normally available from the 5700A. during 5725A
voltage operation, the potential risk of injury or fatal accident is
greater than during unamplified 5700A voltage operation.
The 5725A has five normal modes of operation, including active output in its three
output functions: ac voltage, dc current, and ac current. The five normal operating modes
are:
Standby (also referred to as "dormant" on the schematics)
Voltage Standby
Current Standby
Voltage Operate
Current Operate
Each normal operating mode is described in the following paragraphs. For the meaning
of FAULT, OVERLOAD, or CABLE OFF indications, refer to Table 3-1.
3-7.

Standby

NO OUTPUT
CURRENT
OUTPUT VOLTAGE MODE
CURRENT MODE
HI
5725A STANDBY
11A
MAX
FAULT
LO
OVERLOAD
2OV
PK
CABLE OFF
MAX
Standby mode is when only the 5725A STANDBY indicator is lit. In standby mode, the
5725A is not supplying an output. However, the 5700A, depending on how it is set, can
be supplying up to 1100V or 2.2A. Standby occurs under any of the following
conditions:
At power-up with no pending 5725A entry on the 5700A.
When the 5725A is not selected in a 5700A setup menu as the amplifier for the
5700A output function in use, and the 5725A is not selected as the output location
for all 5700A current.
Warning
OUTPUT SENSE
V A V A
NO
HI
HI
OUTPUT
LO
LO
HI
AUX GUARD
CURRENT
Figure 3-3. Standby Mode Indicator

5725A Operating Functions and Modes

OPR
EX SNS
EX GRD
STBY
WIDEBAND
7 8
9
4 5 6
1 2 3
GROUND
•
+/-
0
Operating Notes
BOOST
OFF
BOOST
W BND
m
k
M
aq8i.eps
3
3-9