Agilent Technologies 86100A Instrukcja Obsługi Pobierz pdf (Strona 117)

3-13

Common Commands

*STB? (Status Byte)

Query *STB?

The *STB? query returns the current contents of the Status Byte, including the Master Sum-

mary Status (MSS) bit. See Table 3-6 on page 3-13 for Status Byte Register bit definitions.

Returned Format <value><NL>

<value> is an integer, from 0 to 255.

Example This example reads the contents of the Status Byte into the numeric variable, Value.

10 OUTPUT 707;"*STB?"

20 ENTER 707;Value

In response to a serial poll (SPOLL), Request Service (RQS) is reported on bit 6 of the status

byte. Otherwise, the Master Summary Status bit (MSS) is reported on bit 6. MSS is the inclu-

sive OR of the bitwise combination, excluding bit 6, of the Status Byte Register and the Ser-

vice Request Enable Register. The MSS message indicates that the scope is requesting

service (SRQ).

*TRG (Trigger)

Command *TRG

Table 3-6. Status Byte Register Bits

Bit Bit Weight Bit Name Condition

7 128 OPER 0 = no enabled operation status conditions have occurred

1 = an enabled operation status condition has occurred

6 64 RQS/MSS 0 = analyzer has no reason for service

1 = analyzer is requesting service

5 32 ESB 0 = no event status conditions have occurred

1 = an enabled event status condition occurred

4 16 MAV 0 = no output messages are ready

1 = an output message is ready

3 8 — 0 = not used

2 4 MSG 0 = no message has been displayed

1 = message has been displayed

1 2 USR 0 = no enabled user event conditions have occurred

1 = an enabled user event condition has occurred

0 1 TRG 0 = no trigger has occurred

1 = a trigger occurred

0 = False = Low 1 = True = High

1 2 ... 112 113 114 115 116 117 118 119 120 121 122 ... 363 364

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