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RS-232 Commands
Refer to Table 3-2 for a list of commands included in the command set.
NOTE
ACSII characters not included in the command set are ignored.
Table 3-2
Command set
Function
ASCII Command Description
Open the relay
O or o
After the open command is sent, a 25msec delay
occurs which allows the relay to settle. After the
relay settles, an ASCII ‘1’ is sent over the RS-232
indicating settling time has run out.
Close the relay
C or c
After the closed command is sent, a 25msec delay
occurs which allows the relay to settle. After the
relay settles, an ASCII ‘1’ is sent over the RS-232
indicating settling time has run out.
Query relay state
S or s
Upon receiving this command, if the relay is closed
an ASCII 1 is returned; if the relay is open, an ASCII
0 is returned.
Firmware
information
I or i
Firmware information can be retrieved over the
RS-232 using the ‘I’ command. After the command
is sent, ‘Keithley Instruments Inc., Model 7999-4,
rev A01’ (or similar due to firmware revision level)
will be returned over the RS-232.
Содержание 7999-4
Страница 1: ...Contains Operating and Servicing Information Model 7999 4 Microwave Switch Instruction Manual...
Страница 12: ...1 GeneralInformation...
Страница 16: ...2 Connections...
Страница 22: ...3 Operation...
Страница 25: ...3 4 Operation 1 1 Figure 3 2 Jumper location...
Страница 29: ...4 ServiceInformation...
Страница 34: ...5 ReplaceableParts...
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Страница 41: ...Keithley Instruments Inc 28775 Aurora Road Cleveland Ohio 44139 Printed in the U S A...