Common Commands CMU
1100.4903.12 6.2 E-10
*CLS
CLEAR STATUS sets the status byte (STB), the standard event register (ESR) and the EVENt-part
of the QUEStionable and the OPERation register to zero. The command does not alter the mask and
transition parts of the registers. It clears the output buffer.
*ESE 0 to 255
EVENT STATUS ENABLE sets the event status enable register to the value indicated. Query
*ESE? returns the contents of the event status enable register in decimal form.
*ESR?
STANDARD EVENT STATUS QUERY returns the contents of the event status register in decimal
form (0 to 255) and subsequently sets the register to zero.
*IDN?
IDENTIFICATION QUERY queries the instrument identification.
*IST?
INDIVIDUAL STATUS QUERY returns the contents of the IST flag in decimal form (0 | 1). The IST-
flag is the status bit which is sent during a parallel poll (see chapter 5).
*OPC
OPERATION COMPLETE sets bit 0 in the event status register when all preceding commands have
been executed. This bit can be used to initiate a service request (cf. chapter 5).
*OPC?
OPERATION COMPLETE QUERY writes message "1" into the output buffer as soon as all preced-
ing commands have been executed (cf. chapter 5).
*OPT?
OPTION IDENTIFICATION QUERY queries the options included in the instrument and returns a list
of the options installed. The response consists of Arbitrary ASCII Response Data according to IEEE
488.2. The options are returned at fixed positions in a comma-separated string. A zero is returned for
options that are not installed.
Example:
0,0,0,0,B11,0,B21Var02,0,0,0,B41,B52Var02,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,PCMCIA,0,
0,0,0,0,0,0,0,K20,K21,K22,K23,K24,K27,K28,K29,0,0,0,0,0,0,0,K42,K43,0,0,0,0,0,0,0,0,0,0,K83,K84,
K85,K86,0,FMR5,AMD K6-2,64 MB,0,0,0,rxtx1,0,0,0,0,0
An alternative list of options can be queried via the command SYSTem:OPTions? See also descrip-
tion of Setup – Options menu in Chapter 4.
The CMU hardware options are listed at the beginning of the output string:
Response Description Response Description
B1/B2 OCXO B54Var02/Var14 Sig. Mod. for GSM, TDMA, AMPS
B5 GSM Linkhandler (CRTU) B56Var14 Power PC for USU
B6 MAC/Speech Board (CRTU) B56Var02/Var14 Power PC
B7 I/Q-IF Interface (CRTU) B66 WCDMA L1 Copro
B9 Two auxiliary RF generators B68 WCDMA L1 Copro, fully fitted
B11/B12 OCXO B71 ABIS (CMU300)
B17 I/Q-IF Interface B73 A/B Board
B21 Universal Signalling Unit B76 WCDMA L1 Copro (CMU300)
B21Var14 USU for WCDMA, GPRS B81 cdmaOne LH
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