Programming External Sensing; Overload Conditions; Phase Lock Errors - Fluke 5700A Series II Operator's Manual

5700A/5720A Series II
Operators Manual

5-69. Programming External Sensing

The 5700A/5720A Series II has some similarities to the 5200A when handling external
sensing. You can still program external sensing at any output, and the external sensing
feature automatically turns on and off as the output goes in and out of range, until
external sense is explicitly turned off in your program. However, when programming
external sense, you should take the following differences into account:
•
•

5-70. Overload Conditions

When an overload condition occurs, both the 5200A and the 5270A calibrators generate a
limit error. This limit error causes the 5700A/5720A Series II to revert to standby mode,
unlike the 5200A, which remains in operating mode when overload occurs.

5-71. Phase Lock Errors

If the phase lock is enabled, but the signal cannot be locked at the PHASE LOCK
terminal, an error condition occurs. The 5700A/5720A Series II responds to this error
condition by reverting to standby mode and generating a limit error. The 5200A remains
in operating mode when this error occurs; it does not report an error.
5-74
Unlike the 5200A, the 5700A/5720A Series II cannot use external sense between
100 mV and 220 mV.
If external sense is enabled and there is no signal at the SENSE terminals, an error
condition occurs. The 5720A responds to this error condition by reverting to standby
mode and generating a limit error. The 5200A remains in operating mode when this
condition occurs; it does not report an error.