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ARM Subsystem
TVS600 & TVS600A Command Reference
2–11
ARM:SOURce
ARM:SOURce?
Sets or queries the source that will arm the acquisition system. You can specify
only one source at a time and it is shared by all acquired channels. Setting the
arm source to BUS configures the event detector to accept and arm on either the
*TRG or the VXIbus word serial <Trigger> command. The ECLTrg and TTLTrg
sources provide normal and inverted access to the standard ECLT and TTLT
signals on the VXI P2 bus. TTLTrg<n> arms when the TTLT line is low.
ITTLTrg<n> arms when the TTLT line is high. The ECLTrg<n> arms when the
ECLT line is high. IECLTrg<n> arms when the ECLT line is low. EXT arms
when the EXT input is a TTL low.
EXTernal is the front-panel BNC connector labeled Arm Input. Setting the arm
source to IMMediate bypasses event detection and immediately arms the
acquisition system.
ARM[:A][:LAYer[1]]:SOURce <arm_source>
ARM[:A][:LAYer[1]]:SOURce?
<arm_source> Query response
BUS
ECLTrg0
ECLTrg1
EXTernal
IECLTrg0
IECLTrg1
ITTLTrg0
ITTLTrg1
.
.
.
ITTLTrg7
IMMediate (No source needed)
TTLTrg0
TTLTrg1
.
.
.
TTLTrg7
BUS
ECLT0
ECLT1
EXT
IECLTrg0
IECLTrg1
ITTLTrg0
ITTLTrg1
.
.
.
ITTLTrg7
IMM
TTLT0
TTLT1
.
.
.
TTLT7
IMM
Execution Error –141, “Invalid character data”
Attempted to set arm source to INTernal or any other invalid value.
Syntax
Parameters
Reset Value
Errors and Events