8845A/8846A 
Programmers Manual 
62 
*PSC? 
Description  Returns the state of the clearing of the Status Byte and Standard Event 
Enable registers at power-up. 
Examples  *PSC?  Returns zero if clearing is disabled. Returns one 
if clearing enabled. 
*SRE <enable value> 
Description  Enables or disables bits in the Meter’s Status Byte enable register. 
Parameters  <n>  =  0 to 255  Binary-weighted decimal value representing the 
bits to set in the register. Although this register 
has 8 bits and will accept a number from 0 to 
255, only bits 3 through 5 are used.  
Examples  *SRE 48  Sets bits 4 and 5 to one and all other bits to zero. 
*SRE? 
Description  Retrieves the value in the Meter’s Status Byte enable register. 
Examples  *SRE?  Retrieves a binary-weighted decimal value 
representing the bits set in the enable register. 
*STB? 
Description  Retrieves the value in the Meter’s Status Byte summary register. Although 
like a serial poll, this command is processed as an instrument command. 
Returned results are the same a when receiving a serial poll, but the SRQ 
bit is not cleared if a serial poll has occurred. 
Examples *STB? 
Calibration Commands 
 
CALibration? [{ON|OFF}] 
Description  After entering the proper code using the CAL:SEC:CODE command, this 
command causes the Meter to perform an adjustment using the values 
supplied with the CAL:VAL command. See the 8845A/8846A Service 
Manual for details on using this command. 
Parameters  <n>  =  ON or 1  Execute only one calibration step. 
      OFF or 0  Execute a group (mode) of related calibration 
steps at one time. 
Examples  CAL? ON  Execute one step of the calibration steps for the 
calibration group specified by the CAL:VAL 
command. 
  CAL?  Returns +0 (good) or +1 (failed)