prog.book : ch8out.fm 4 Mon Feb 15 09:24:37 1999
OUTput Subsystem
OUTPut:TTL[1|2]:ACTive HIGH|LOW
8-4 HP E4418B/E4419B Programming Guide
OUTPut:TTL[1|2]:ACTive HIGH|LOW
This command controls whether a window limits fail drives the rear panel
TTL Output HIGH or LOW. Output 1 is always connected to the upper
window and Output 2 is always connected to the lower window.
Syntax
Example
Reset Condition
On reset, a window limits fail will drive the TTL Output low.
Query
OUTPut:TTL[1|2]:ACT?
The query command enters either HIGH or LOW into the output buffer
indicating which TTL state is active for a window limit fail.
• HIGH is returned if the TTL output is active high for a window
limit fail.
• LOW is returned if the TTL output is active low for a window limit
fail.
Query Example
OUTP:TTL1:ACT HIGH This command sets TTL output 1
HIGH whenever there is a limits
fail in the upper window.
OUTP:TTL1:ACT? This command queries whether
the TTL Output for an upper
window limit fail is active high or
low.
OUTP
1
2
:ACT
HIGH
LOW
Space
?
:TTL
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