Measurement-computing Digital488 Uživatelský manuál Strana 69
- Strana / 83
- Tabulka s obsahem
- KNIHY
Hodnocené. / 5. Na základě hodnocení zákazníků
Section 4 IEEE 488 Primer
4.9
4.7.8 Selected Device Clear (SDC)
This causes a single device to be initialized to a pre-defined or power up
state. ($04)
4.7.9 Serial Poll Disable (SPD)
The
SPD
command disables all devices from sending their Serial Poll
status byte. ($19)
4.7.10 Serial Poll Enable (SPE
)
A device which is Addressed to Talk will output its Serial Poll status
byte after
SPE
is sent and
ATN
is unasserted. ($18)
4.7.11 Group Execute Trigger (GET)
This command usually signals a group of devices to begin executing a
triggered action. This allows actions of different devices to begin
simultaneously. ($08)
4.7.12 Take Control (TCT)
This command passes bus control responsibilities from the current
Controller
to another device which has the ability to control. ($09)
4.7.13 Secondary Command Group (SCG)
These are any one of the 32 possible commands (0 to 31) in this group.
They must immediately follow a talk or listen address. ($60 to $7F)
- Digital488 3
- Digital488OEM 3
- Instruction Manual 3
- Table of Contents 5
- Introduction 9
- Section 1 Introduction 10
- 1.3 Specifications 11
- &$87,21 12
- Digital488/OEM Specifications 13
- Digital I/O 13
- IEEE 488 13
- Getting Started 17
- IEEE Address = 18 18
- CR Only LF Only 19
- EOI Enabled EOI Disabled 19
- CR-LF LF-CR 19
- 210 20 30 40 50 20
- 4939199129 20
- 65 µS typ 50 µS typ 22
- DCL, SDC or IFC 22
- DATA VALID 23
- 15 µS min 23
- 50 µS typ† 23
- † 15 µS typ in F5 Format 23
- 75 µS typ 50 µS typ 25
- Command Descriptions 31
- Serial Poll Status Byte 54
- IEEE 488 Primer 61
- Section 4 IEEE 488 Primer 63
- 4.3 SEND IT TO MY ADDRESS 64
- 4.4 BUS MANAGEMENT LINES 64
- 4.4.1 Attention (ATN) 64
- 4.4.2 Interface Clear (IFC) 65
- 4.4.3 Remote Enable (REN) 65
- 4.4.4 End or Identify (EOI) 65
- 4.4.5 Service Request (SRQ) 65
- 4.5 HANDSHAKE LINES 66
- 4.5.1 Data Valid (DAV) 66
- 4.6 DATA LINES 67
- 4.7 MULTILINE COMMANDS 67
- 4.7.1 Go To Local (GTL) 67
- 4.7.6 Local Lockout (LLO) 68
- 4.7.7 Device Clear (DCL) 68
- 4.8 MORE ON SERVICE REQUESTS 70
- 4.8.1 Serial Poll 71
- 4.8.2 Parallel Poll 71
- Service Information 73
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