User manual
2638A 
Users Manual 
7-16 
Table 7-1. Error Messages (cont.) 
Error Code  Error Message  Causes and Solutions 
Error 1331 
Command 
incomplete 
Cause: An incomplete command line was received. 
Solution: Make sure that correct command was sent. 
Error 1333 
Invalid channel 
number 
Cause: Invalid channel number was found by command 
parser. This could be caused by a wrong format. 
Solution: Check the parameter and try again. 
Error 1334  Illegal channel count 
Cause: The number of channels exceeds the limit when 
parse the channel list. 
Solution: Check the parameter and try again. 
Error 1337 
Operation not 
allowed 
Cause: Operation is not allowed for current configuration, and 
the channel is not in scan list. Make sure that you have input 
the command with correct parameters and channel ID. 
Solution: Check the parameter and try again. 
Error 1338 
Operation not 
allowed in DMM 
mode 
Cause: Operation is not allowed in DMM mode. 
Solution: Use command *RST to reset to factory default. 
Error 1339  Memory is empty 
Cause: Command DATA:LAST? or DATA:READ? was 
received, but data is not available. 
Solution: Check the trigger settings, and make sure that the 
Instrument is properly triggered for scan. 
Error 1340  File name too long 
Cause: More than 30 characters were found in filename 
which specified in command MEM:LOG:READ? or 
MMEM:LOG:READ?  
Solution: Check the parameter and try again. 
Error 1341 
Scan sweep in 
process 
Cause: Operation not allowed while scan is in progress. 
Solution: Send command ABORt to stop the scan. 
Error 1601  Error copying file 
Cause: File coping failed while running SYSTem:DFU 
command because source is missing. 
Solution: Check to see if the file is in the memory. 
Error 1602 
Error modifying file 
property 
Cause: Failed to change file property while running 
SYSTem:DFU command. 
Solution: Cycle the power. If the error occurs again, contact 
Fluke Calibration (see Chapter 1). 










