Fluke 5725A - Manual (Page 68)

5725A
Instruction Manual
3-12
3-10. Voltage Operate
CURRENT
OUTPUT
HI
LO
VOLTAGE MODE
CURRENT MODE
5725A STANDBY
FAULT
OVERLOAD
CABLE OFF
11A
MAX
2OV
PK
MAX
NO OUTPUT
HI HI
LO LO
AUX
CURRENT
GUARD GROUND
WIDEBAND
SENSE
V A Ω
OUTPUT
V A Ω
µ
•
VOLTAGE
OUTPUT
HERE
HI
BOOST
LIT
aq11i.eps
Figure 3-6. Voltage Operate Mode
Warning
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 voltage
operation, the potential risk of injury or fatal accident is greater
than during normal operation.
Voltage operate mode is when only the VOLTAGE MODE indicator is lit. In voltage
operate mode, amplified voltage output is available at the 5700A binding posts. Voltage
operate occurs if "5725A" is selected in a 5700A setup menu as the voltage amplifier,
and the next two conditions are true:
•
An ac voltage 220V or above is showing on the 5700A Output Display with the
OPERATE annunciator lit.
•
The BOOST indicator on the 5700A is lit.
Note
If condition 1 is true, the BOOST indicator can be toggled on and off by
pressing the 5700A BOOST key. If the BOOST indicator is off, then the
5725A is in standby mode.
Note
Under certain settings of ac voltage, especially high voltage between 1 to 5
kHz, a whine from the 5725A is audible. This originates from the output
transformer, and is normal.