B&K Precision 9150-9153 - Manual - Manual (Page 23)

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LATCHING: When the level of INH port changes from high to low, the output of power supply turns off.
LIVE: The output state of power supply changes according to the level of the INH port. If the level
of INH is TTL High, the output is on. If the level at pin INH is TTL Low, the output of the
power supply is off.
OFF: The level state of INH does not affect the output state of the power supply.
c) When “Port Mode” in the menu is set to “DIGITAL I/O”, “INH” pin functions as a digital input pin. For
models 9150, 9151, 9152, and 9153, “TRIN” pin is used for digital input. For digital output, “FLT” is used.
Digital output is not available for models 9150 to 9153. The status of the pin can be read via SCPI command.
FLT: Fault Output pin
(Available for models 9120A, 9121A, 9122A, 9123A, 9124 only)
This pin has multiple functions:
a) When “Port Mode” in the menu is set to “Trigger”, FLT has no function.
b) When “Port Mode” in the menu is set to “RI/DFI”, the FLT pin can be used to determine the reason of a power
supply fault.
The status of FLT can be derived from bits QUES, OPER, ESB, RQS or it can be disabled
QUES： The output level of FLT reflects the state of the QUES bit. When the QUES bit is 1, FLT output a
Low signal, otherwise, if QUES bit is 0, FLT goes High.
OPER： The output level of FLT reflects the of the OPER bit.
ESB： The output level of FLT reflects the state of the ESB bit.
RQS： The output level of FLT reflects the state of the RQS bit.
OFF： The output level of FLT remains high.
c) When “Port Mode” in menu is set to “DIGITAL I/O”, FLT functions as an output pin. The status of the port
can be programmed via SCPI command.
3.9 Digital Volt Meter (DVM)
The power supply provides a built-in Digital Volt meter which can measure DC volts in a range from 0 - 40V.
The connectors are in the rear panel. The voltage value is displayed on the bottom left field of the display.
To measure voltages, connect the leads as shown here:
+
_
DVM
DUT