Fluke 5700A Series II Operator's Manual page 74

5700A/5720A Series II
Operators Manual
A
Output Display
B
Control Display
C
O
(Operate/Standby)
D
X
(External Sense)
3-4
Table 3-1. Front Panel Features
A two-line vacuum-fluorescent display that shows output amplitude and
frequency. The top line shows the active output value (or potential output
value if in standby) using up to eight digits plus a polarity sign. The bottom
line shows output frequency (or potential output frequency if the calibrator is
in standby) using five digits. Following the digits on both lines of the Output
Display are four unit annunciators. (Examples of units are: mV, µA, and
kHz.) Annunciators below the amplitude line on the Output Display indicate
the following active conditions:
OPERATE Lit when an output is active at the binding posts or auxiliary
amplifier
STANDBY Lit when the calibrator is in standby
ADDR Lit when the calibrator is addressed over the IEEE-488
interface
∅-LCK
Lit when the calibrator's output is phase locked to a signal at
the rear panel PHASE LOCK IN connector
∅-SHF
Lit when the calibrator's output has a programmed phase
difference with a signal at the rear panel VARIABLE PHASE
OUT connector
U (Unsettled.) When you change the output, this annunciator
lights briefly until the output settles to within specification.
An alphanumeric vacuum-fluorescent display that shows data entries, UUT
error adjustments, menus, and other prompts and messages. Each menu
contains a set of softkey labels that identify the functions of the softkeys
directly below them. The changing menus provide access to many different
functions through the five softkeys plus the
Softkey Menu Tree.)
Toggles the calibrator between operate and standby modes. In standby
mode, the OUTPUT binding posts are internally disconnected from the
calibrator. The calibrator normally starts up in standby. Status is indicated by
the lighted OPERATE or STANDBY annunciator above the OUTPUT binding
O
posts. Pressing the key does not change any other aspect of the
calibrator's status. The calibrator automatically switches to standby when
any of the following events occur:
•
r
The key is pressed.
• A voltage ≥ 22V is selected when the previous output voltage was less
than 22V.
•
The output location changes (e.g., an amplifier is selected). The
exception to this is when the 5725A is selected for ac voltage or current,
provided the calibrator's current output location is set to "5725A". In this
case, the mode does not toggle.
•
The output function changes to voltage <22V, ac voltage >22V, dc
voltage >22V, dc current, ac current, or resistance. The exception is
when switching between dc and ac current in 5100B emulation mode.
Opens and closes an internal connection between the SENSE and OUTPUT
binding posts. The calibrator powers up with SENSE and OUTPUT
connected internally (the SENSE binding posts are open circuited), with
X
off. Pressing disconnects the sense lines from the OUTPUT binding
posts, and connects them to the SENSE binding posts internally.
P
key. (See Figure 3-3,
X