Hioki 3504-40 C HiTester, Instruction Manual

Page: 257 / 292

8.12 Troubleshooting the Interface
251
8
Service requests are sometimes
not generated. • Are the service request enable register and each event status enable
register configured properly?
• At the end of the SRQ process subroutine, use an
*
CLS
command
to clear all event registers. If the bits of an event are not cleared
once, a service request will not be generated for the same event.
Service requests do not function
properly (PC-9801). • When using N88BASIC, add the following four lines (command to set
the SRQ flag of a PC-9801 to OFF) to the SRQ process subroutine
DEF SEG=SEGPTR(7)
A%=PEEK(&H9F3)
A%=A% AND &HBF
POKE &H9F3,A%
A beep tone is played if a
*
TRG
command is sent.
• Is the trigger setting configured to internal trigger?
• The
*
TRG
command is only valid for the external trigger setting. The
internal trigger setting generates an execution error.
The hardware handshake is not
functioning properly. • Is a cable that has CA (RTS) and CB (CTS) shorted being used?
Use a cross cable that does not have CA (RTS) and CB (CTS)
shorted.
Symptom Cause/Solution