6243/44 DC Voltage Current Source/Monitor Operation Manual
4.8 Alarm Detection
4-38
4.8 Alarm Detection
The following alarm detection function is available to help prevent damage to the 6243/44 as well as the
DUT. When any of these alarm conditions is detected, a message is displayed and output to the GPIB device
event register, error register, measurement data header, etc.
Table 4-14 shows the messages together with their contents and causes.
• When Source 6243/44 Error, Fan Stop, or Over Heat is generated, the output is placed in Standby (out-
put OFF), and operation is not possible until the cause of the error is eliminated.
• When Over Load occurred, the output is placed in Standby.
Table 4-14 Alarm Detection Contents
Message Description Cause
Source Unit Error Source unit malfunction Malfunction
Fan Stop The fan stopped. Malfunction
Over Heat
Over heat
(Internal over heat)
• Malfunction
• Sync operation outside the specified
range
• The vent is blocked
• Ambient temperature exceeds the speci-
fied range
AD Communication Error
Communication error to
the AD unit
• Malfunction
• Error due to noise
Over Load Over load
• Over voltage input from external device
• Connecting to the external voltage
source of exceeding voltage level
• Life of relays (For 6244)
OSC/osc An oscillation is detected
• Connecting L or C which is out of spec-
ification.
• Device oscillation
 RP/ rp Reverse polarity source Reversed polarity source is output.
 LM/ lm Limiter detection The voltage or current limiter is operating.
Over Range Over range Range over
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