Operator’s Checks
The operator’s check for the HP E1418A has two parts.
The first part consists of sending the
SYStem:ERRor?
query to the
module following power-on and entering the response. This check should be
performed after every power-on sequence. At power-on, the HP E1418A
performs a brief self-test that ensures the module can communicate with the
backplane. A successful self-test returns an integer and a string:
+0,"No Error"
Any other response indicates a failure in the module. Chapter 6 contains
troubleshooting information.
Once the power-on self-test has been checked, the operator may perform a
full self-test by sending the
*TST?
query and entering the response. This
query executes a full self-test that checks all circuits of the module except
the output relays. A successful self-test returns:
+0
Any other response indicates a failure. Chapter 6 contains additional
information about the self-test error codes and troubleshooting information.
Operator Check
Example
This example checks the module for errors after power-on and then
performs a full self-test.
/** FUNCTION PROTOTYPES **/
void main (void);
void err_handler(ViSession vi, ViStatus x); /* VTL error routine */
void sys_err(ViSession resource); /* SCPI error routine */
•
•
•
ViStatus err; /* Global VTL error variable */
void main (void)
{
int selftest;
char selftestresults [80];
err=viPrintf(dac, “*TST?\n”); /* run self test */
if(err VI_SUCCESS) err_handler(dac, err);
err=viScanf(dac, “%d%t”, &selftest,&selftestresults); /* enter integer and string returned */
Chapter 3
Operating Information 27
Summary of Contents for E1418A
Page 4: ...Notes 4 HP E1418A 8 16 Channel D A Converter Service Manual Contents ...
Page 8: ...Notes 8 HP E1418A D A Converter Module Service Manual ...
Page 58: ...Notes 58 Verification Tests Chapter 4 ...
Page 66: ...Figure 5 5 Internal Resistor Adjustment Connections 66 Adjustments Chapter 5 ...
Page 81: ...Figure 6 1 8 Channel Disassembly Chapter 6 Service 81 ...
Page 82: ...Figure 6 2 16 Channel Disassembly 82 Service Chapter 6 ...
Page 84: ...Notes 84 Service Chapter 6 ...
Page 90: ...Figure 7 1 HP E1418A Replaceable Parts 90 Replaceable Parts Chapter 7 ...
Page 91: ...Figure 7 2 Common Terminal Module Replaceable Parts Chapter 7 Replaceable Parts 91 ...
