The following example program shows how the EVENt part of the STATus:OPERation registers can be read using the commands for symbolic status register evaluation typed in boldface. The program provokes and evaluates the event Reference Frequency Not Locked (RFNL) which is reported by bit no. 6 of the STATus:OPERation:CMU:SUM1:CMU1 sub-register assigned to the CMU base system (see Symbolic Status Event Register Evaluation and STATus:OPERation Register).
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CMUBASE: *RST;*OPC? |
Reset the instrument; prevent the following command from being executed before *RST is complete |
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CMUBASE: *CLS |
Clear output buffer, set status byte |
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CMUBASE: CONF:SYNC:FREQ:REF:MODE? |
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CMUBASE: CONF:SYNC:FREQ:REF:MODE EXT |
Provoke event -> Reference Frequency Not Locked (external reference frequency selected but no external input signal available) |
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CMUBASE: TRACE:REMOTE:MODE:FILE ON |
Remote trace to file |
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CMUBASE: TRACE:REMOTE:MODE:DISPLAY ON |
Remote trace display ON |
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CMUBASE: TRACE:REMOTE:MODE:SRQ ON |
Display SRQ event on remote trace window |
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CMUBASE: STATUS:PRESET |
Reset status register system |
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CMUBASE: *STB? |
Check status byte |
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CMUBASE: *SRE? |
Check service request enable |
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CMUBASE: *SRE 128 |
Service request for OPERATION register |
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CMUBASE: *STB? |
Check status byte |
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CMUBASE: STAT:OPER:SYMB:ENAB? |
Check symbolic status register enable --> NONE |
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CMUBASE: STAT:OPER:SYMB:ENAB RFNL |
Enable symbolic status register evaluation (event Reference Frequency Not Locked = RFNL ) |
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[l_LOOP] |
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if CMUBASE: *STB? <> 0 goto read_event |
Read STB Bit 7 is set (that is SRQ) |
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PAUSE 2000 |
Wait 2 seconds |
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goto l_LOOP |
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[read_event] |
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CMUBASE: STAT:OPER:EVENT:SADD? |
Eval. which SecAddr causes the Event? --> CMUBASE |
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CMUBASE: STAT:OPER:SYMB? |
Eval. which bit (event) causes SRQ --> RFNL |
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CMUBASE: *STB? |
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CMUBASE: *STB? |
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goto l_LOOP |
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