iET PRS-300 Series, Руководство по эксплуатации, Страница: 45 / 50

PRS-300 Series
APPENDIX A 35
*PCS
Power-on Status Clear
Note: Remote command can start with or without * symbol for compatibility.
2.13 Formats
IEEE 488.2 enables remote programming of all instrument functions, measurement conditions
and comparator settings etc. Outputs include measurement conditions, open/short corrections, and
measured values.
Data Formats
Data will be transmitted in ASCII NR3 format per IEEE488.2 sec. 8.7.4 and reproduced below.
Note that there is always precisely one digit before the decimal point, and precisely three digits in
the exponent.
Multiple results
For the case where a measurement produces multiple results (e.g. MEASure Cs, and DF), the
individual numbers will be separated by commas per IEEE488.2 para. 8.4.2.2.
Sequences of Test (Sequence Mode) will be treated as a single Message Unit, with results sepa-
rated by commas. If a particular test has “None” selected as a secondary parameter, no place will be
reserved for the null result. As an example, a sequence of three tests asking for C/D, ESR, and Z/
would appear as follows:
<data>,<data>,<data>,<data>,<data><NL>
All response messages will be terminated by the NL character together with the EOI line as-
serted.
Status Byte Register
Decimal
Bit Value Use
7 128 None
6 64 SRQ, SPOL Resets
5 32 Summary of Standard Event
Status Register*
4 16 Message Available
3 8 None
2 4 None
1 2 None
0 1 None
*The Status Byte Regester is readable via the standard STB? as de fi ned in para. 11.2.2.2 of the
IEEE spec. The 7600 Plus will also implement an SRE register to enable each bit of the Status Byte
Register per para 11.3.2 of the IEEE spec. This register shall be readable by a SRE? command and
writeable by a SRE <#> command.
Standard Event Status Register
Decimal
Bit Value Use
7 128 Power Up Since Last Query