Using the Multiplexer
35
Chapter 2
Using the Multiplexer
What’s in This Chapter
This chapter contains the following sections:
•
Reset Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 35
•
Switching or Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 36
•
Switching Channels to the Analog Bus. . . . . . . . . . . . . . . . . Page 36
•
Recalling and Saving States . . . . . . . . . . . . . . . . . . . . . . . . . Page 52
•
Detecting Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . Page 53
Reset Conditions
At power-on or following the reset of the module (
*RST
command), all 256
channel relays, 21 tree relays, and five analog bus connection relays are
open. The nine C relays are in their normally closed position. In addition,
after a
*RST
command, the scan channel list is empty. Table 2-1 lists the
parameters and default values for the functions following turn-on or reset.
Table 2-1. Agilent E8462A Default Conditions for Power-on and Reset
Parameter
Default
Value
Description
ARM:COUNt
1
Number of scanning cycles is one.
TRIGger:SOURce
IMM
Advances through a scanning list automatically.
INITiate:CONTinuous
OFF
Continuous scanning disabled.
OUTPut[:STATe]
OFF
Trigger output from EXT, TTL, or ECL sources is disabled.
[ROUTe:]SCAN:MODE
NONE
Channel list is not set up.
[ROUTe:]SCAN:PORT
NONE
Analog bus connections are disabled.
[ROUTe:]FUNCtion
WIRE2
2-wire mode is set at power-on. FUNCtion is not changed by *RST.
DIAGnostic:INTerrupt[:LINE]
1
Interrupt line setting. NOT changed by *RST.
DIAGnostic:INTerrupt:TIME
0.005
Sets interrupt timer value. NOT changed by *RST.
DIAGnostic:SCAN:DELay
0.0
Wait time between opening and closing channels. Reset by *RST.
Channel state
All 256 channels are open (CH000-255 are open).
Tree relays state
All 22 tree relays are open (CH9000-9021).
Routing relays state
All routing relays are open and use the normally closed path
(CH9100-9108)
.
Analog bus connection relay status
5 analog bus relays are open (CH9200-9204).
Channel list from SCAN command (after *RST)
Channel list is empty following a reset of the module with *RST command.
Содержание E8462A
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Страница 10: ...8 Notes...
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Страница 15: ...Configuring the Agilent E8462A Multiplexer 13 Figure 1 1 Agilent E8462A Simplified Schematic...
Страница 68: ...66 Using the Multiplexer...
Страница 104: ...102 Agilent E8462A Relay Multiplexer Command Reference...
Страница 118: ...116 Agilent E8462A Relay Multiplexer Command Reference...
Страница 126: ...124 Agilent E8462A Scanning Voltmeter Application Examples Chapter 4 Notes...
Страница 146: ...144 Register Based Programming...
Страница 156: ...154 Index...