Common Commands

The common commands are taken from the IEEE 488.2 (IEC 625-2) standard. These commands have the same effect on different devices. The headers of these commands consist of "*" followed by three letters. Many common commands are related to the status reporting system which is described in detail in Introduction - Remote Control.

Common Commands

Command	Parameters	Remark
*CLS		no query
*ESE	0 to 255
*ESR?		query only
*GTL		not IEEE 488.2 confirmed; see Addressed Commands
*IDN?		query only
*IST?		query only
*LLO	TRUE \| FALSe	not IEEE 488.2 confirmed; see Interface Message , Universal Commands
*OPC
*OPT?		query only
*PRE	0 to 255
*PSC	0 \| 1
*RST		no query
*SEC	0 to 30	not IEEE 488.2 confirmed; see Subsystem MISC
*SRE	0 to 255
*STB?		query only
*TST?		query only
*WAI

*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. The 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 Introduction - Remote Control).
*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. Introduction - Remote Control).
*OPC?	OPERATION COMPLETE QUERY writes message "1" into the output buffer as soon as all preceding commands have been executed (cf. Introduction - Remote Control).
*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 description of Setup Options menu in Chapter 4.

The CMU hardware options are listed at the beginning of the output string, e.g.:

Pos.	Response	Description	Pos.	Response	Description
0	B1/B2	OCXO	21	B54Var02/Var14	Sig. Mod. for GSM, TDMA, AMPS
1	B5	GSM Linkhandler (CRTU)	22	B56Var14	Power PC for USU
2	B6	MAC/Speech Board (CRTU)	23	B56Var02/Var14	Power PC
3	B7	I/Q-IF Interface (CRTU)	24	B66	WCDMA L1 Copro
4	B9	Two auxiliary RF generators	25	B68	WCDMA L1 Copro, fully fitted
5	B11/B12	OCXO	26	B71	ABIS (CMU300)
6	B17	I/Q-IF Interface	27	B73	A/B Board
7	B21	Universal Signalling Unit	28	B76	WCDMA L1 Copro (CMU300)
8	B21Var14	USU for WCDMA, GPRS	29	B81	cdmaOne LH
9	B21Var02	ULH for GMS, TDMA, AMPS	30	B82	Access Board for B81/83
10	B21Var02/Var14	Universal Signalling Unit	31	B83	CDMA2000 LH
11	B41	Audio option	32	B85	Speech codec for B83
12	B52	Speech coder for CMU-B21	33	B88	HDR option for B83
13	B52Var14	Speech coder for USU	34	B91	Second RF Channel
14	B52Var02	Speech coder for ULH	35	B95	Add. RF Generator
15	B52Var02/Var14	Speech coder	36	U61	Floppy disk
16	B53	Bluetooth	37	B62
17	B53Var14	Bluetooth for USU	38	U65	DDC400 for WCDMA
18	B53Var02	Bluetooth for ULH	39	U75	DDC400 for WCDMA Var04
19	B53Var02/Var14	Bluetooth	40	U99	RF1 with RF2 Level Range
20	B54Var14	Sig. Mod. f. GSM, TDMA, AMPS	41	0	not used

The CMU software options are listed after the software options, e.g.:

Position	Response	Description	Position	Response	Description
42	K0	DemoPack	62	K43	EGPRS Signalling
43	K2	GSM Activation (CRTU)	63	K45	AMR GSM for CMU200
44	K5	CRTU-G Activation (CRTU)	64	K53	Bluetooth
45	K6	WCDMA Activation (CRTU)	65	K65	WCDMA UE TX Test (3GPP/FDD)
46	K20	GSM400-MS	66	K66	WCDMA DL Generator
47	K21	GSM900-MS	67	K67	WCDMA Signalling Band III
48	K22	GSM1800-MS	68	K68	WCDMA Signalling Band I
49	K23	GSM1900-MS	69	K69	WCDMA Signalling Band II
50	K24	GSM850-MS	70	K75	WCDMA Node B Test (CMU300)
51	K27	IS 136-800-MS	71	K76	WCDMA UL Generator (CMU300)
52	K28	IS 136-1900-MS	72	K81	CDMA1-MS 800
53	K29	AMPS-MS	73	K82	CDMA1-MS 1700/1900
54	K30	GSM400-BS	74	K83	CDMA2000 450
55	K31	GSM900-BS	75	K84	CDMA2000 800
56	K32	GSM1800-BS	76	K85	CDMA2000 1700/1900
57	K33	GSM1900-BS	77	K86	CDMA2000 2200
58	K34	GSM850-BS	78	K88	1xEV-DO
59	K39	MOC/MTC for GSM-BS
60	K41	EDGE
61	K42	GPRS Signalling

The CMU hardware equipment is listed after the hardware options, e.g.:

Position	Response	Description	Position	Response	Description
79	FMR5/6	Front Module Controller	82	0	not used
80	<CPU_Type>		83	0	not used
81	<Memory>		84	0	not used

The CMU firmware versions are listed after the hardware equipment, e.g.:

Position	Response	Description	Position	Response	Description
85	uP1		88	0	not used
86	uP2		89	0	not used
87	0	not used	90	0	not used

*PRE 0 to 255	PARALLEL POLL REGISTER ENABLE sets parallel poll enable register to the value indicated. Query *PRE? returns the contents of the parallel poll enable register in decimal form.
*PSC 0 \| 1	POWER ON STATUS CLEAR determines whether the contents of the ENABle registers is maintained or reset when the instrument is switched on. PSC = 0 causes the contents of the status registers to be maintained. Thus a service request can be triggered on switching on in the case of a corresponding configuration of status registers ESE and SRE. PSC 0 resets the registers. Query *PSC? reads out the contents of the power-on-status-clear flag. The response can be 0 or 1.
*RST	RESET sets the instrument to a defined default status. The command resets all function groups and test modes, restoring the default values defined for remote control operation. *RST is equivalent to `SYSTem:RESet[:ALL]`. The default settings are indicated in the description of commands.
*SRE 0 to 255	SERVICE REQUEST ENABLE sets the service request enable register to the value indicated. Bit 6 (MSS mask bit) remains 0. This command determines under which conditions a service request is triggered. The query *SRE? returns the contents of the service request enable register in decimal form. Bit 6 is always 0.
*STB?	READ STATUS BYTE QUERY reads the contents of the status byte in decimal form.
*TST?	SELF TEST QUERY triggers selftests of the instrument and outputs an error code in decimal form (the output is zero in the current firmware version).
*WAI	WAIT-to-CONTINUE prevents servicing of the subsequent commands until all preceding commands have been executed and all signals have settled (see also Introduction - Remote Control and *OPC).