Unipulse F377A, Operation Manual

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5 SETTING OF FUNCTIONS
64
S
E
TTI
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G OF
FUN
C
TIO
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Chapter
5
5-18.
Voltage Output
This interface extracts analog voltage proportional to voltage ・ current input signals. This interface
is convenient for observation and recording of waveforms with a recorder, etc., connected.
The output level is approx. 0.6V per 1V at voltage input and approx. 0.3V per 1mA at current input.
- Example of output equivalent circuit and external equipment connection
Output signals are not the indicated values themselves because they are extracted before voltage ・
current input signals are A/D-converted.
Therefore, output signals do not synchronize with the digitally processed indicated values, such as
the digital zero and digital filter.
Output in synchronization with the indicated values requires an optional D/A converter.
Voltage output filter
Whether to extract the voltage output before or after the internal analog filter can be switched.
ON: Output after the analog filter
OFF: Output before the analog filter
How to set
5-19.
Screen Lock / Key Lock
(B5 terminal function selection)
By the setting of "B5 Function Selection," switching can be done from the WORK3 terminal
function to DSP_LOCK terminal function or KEY_LOCK terminal function.
WORK3: This can be used as the 4th work selection bit of external input.
WORK can be specified from 00 to 15.
DSP_LOCK: When the terminal is short-circuited, key operations on the measurement
screens (comparison, hold, and graph) are disabled. However, the measurement
screen can be changed (hold to graph) and the cursor function is enabled.
KEY_LOCK: All key operations are disabled.
＋
－
6
7
－
＋
F377A inside
＋
－
Analogue
Filter
A/D
Vin ＋ , Vin －
IN －
SW
F.G
＋ MONITOR
- MONITOR
External
equipment
SET. Operation Page 2
→ →
System Setting
→
[DSP_LOCK] [KEY_LOCK]