44
Chapter 1, Using HP-IB
Getting Started
•
Guideline #6. Numeric values are returned in HP-IB Units or Attribute Units only.
When querying measurements or settings through HP-IB, the Test Set always returns
numeric values in HP-IB Units or Attribute Units, regardless of the current Display
Units setting. HP-IB Units, Attribute Units and Display Units determine the units-of-
measure used for a measurement or setting, for example, Hz, Volts, Watts, Amperes,
Ohms. Refer to
"Specifying Units-of-Measure for Settings and Measurement
for further information.
For example, if the Test Set’s front panel is displaying TX Frequency as 835.02 MHz,
and the field is queried through HP-IB, the value returned will be 835020000 since the
HP-IB Units for frequency are Hz. Note that changing Display Units will not change
HP-IB Units or Attribute Units. Note also that setting the value of a numeric field
through HP-IB can be done using a variety of units-of-measure. The HP-IB Units or
Attribute Units for a queried value can always be determined using the :UNITs?
command or :AUNits? command respectively (refer to
"Multiple Number Measurement Syntax" on page 183
,
for command syntax).
Control Annunciators
The letters and symbols at the top right corner of the display indicate these
conditions:
•
R
indicates the Test Set is in remote mode. The Test Set can be put into the remote mode
by an external controller or by an IBASIC program running on the built-in IBASIC
controller.
•
L
indicates that the Test Set has been addressed to Listen.
•
T
indicates that the Test Set has been addressed to Talk.
•
S
indicates that the Test Set has sent the Require Service message by setting the Service
Request (SRQ) bus line true. (See
"Status Reporting" on page 244
•
C
indicates that the Test Set is currently the Active Controller on the bus.
•
*
indicates that an IBASIC program is running.
•
?
indicates that an IBASIC program is waiting for a user response.
•
-
indicates that an IBASIC program is paused.
Содержание 8921A
Страница 14: ...14 ...
Страница 17: ...Contents 17 3 HP IB Command Guidelines Sequential and Overlapped Commands 72 Guidelines for Operation 73 ...
Страница 24: ...Contents 24 9 Error Messages ...
Страница 25: ...Contents 25 Index 593 ...
Страница 26: ...Contents 26 ...
Страница 27: ...27 1 Using HP IB ...
Страница 58: ...58 Chapter 1 Using HP IB Remote Local Modes ...
Страница 59: ...59 2 Methods For Reading Measurement Results ...
Страница 71: ...71 3 HP IB Command Guidelines ...
Страница 94: ...94 Chapter 3 HP IB Command Guidelines Guidelines for Operation ...
Страница 95: ...95 4 HP IB Commands ...
Страница 100: ...100 Adjacent Channel Power ACP ...
Страница 150: ...150 Display DISPlay space TDMA test TESTs TFReq THLP TIBasic TMAKe TPARm TPRint TSEQn TSPec Returns current screen TX ...
Страница 173: ...173 System System SYSTem ERRor Returns integer value quoted string ...
Страница 236: ...236 Triggering Measurements ...
Страница 237: ...237 5 Advanced Operations ...
Страница 350: ...350 Chapter 6 Memory Cards Mass Storage Using Memory Cards Figure 20 Inserting a Memory Card ...
Страница 360: ...360 Chapter 6 Memory Cards Mass Storage Using External Disk Drives ...
Страница 361: ...361 7 IBASIC Controller ...
Страница 442: ...442 Chapter 7 IBASIC Controller The TESTS Subsystem ...
Страница 559: ...559 Chapter 8 Programming The Call Processing Subsystem Example Programs 11280 SUBEND 11290 ...
Страница 562: ...562 Chapter 8 Programming The Call Processing Subsystem Example Programs ...
Страница 563: ...563 9 Error Messages ...
Страница 592: ...592 ...