Highland T560, Technical Manual

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27 T560MANK5.DOCX
TRigger SYn
Selects optional internal DDS synthesizer as the trigger source. Its
frequency may be set from 0.018 Hz to 16 MHz using the SYN
command.
TRigger REmote
Enables software triggers, via the FIRE command.
Fire
Fires one remote trigger.
TRigger OFf
Disables triggers
TDivisor 4194304
Sets a trigger divisor integer K, from 1 to 2 32 -1. When the divisor is
loaded, the next trigger will fire the T560 (subject to other restraints)
and then K-1 triggers will be skipped before another is enabled.
TD 0
disables the divide function. Divide can be combined with BURST.
TRigger HIz
Trigger input is 10K to ground.
TRigger TErminate
Enables 50 ohms terminator on TRIGGER input.
TRigger
Trigger setup query, evokes a response of...
Trig REM 50R Level 1.250 Div 0000000000 SYN 00010000.00
4.6.3.SYNTHESIZE COMMAND
The T560 is furnished with a direct-digital frequency synthesizer that may be used to
generate internal triggers from 0 to 16 MHz with 0.018 Hz resolution.
SYn 123.456K
sets the frequency. Suffix characters may be K (kilohertz) or M
(megahertz). The default is Hertz.
SYn
queries the current frequency
4.6.4.BURST COMMANDS
The
BURst
commands control the trigger burst logic. Burst allows a group of N pulses to
be fired out of each group of M input triggers; that is, N successive triggers will be
accepted, then M-N triggers will be skipped.
It is also possible to generate a burst of N triggers, invoked by the rising edge of the GATE
input, or by remote command. See GATE COMMANDS.
BNum 555
sets burst N, pulses output in burst
BNum
queries burst N value
BMod 2000
sets burst M, total triggers/cycle
BMod
queries burst M value
BUrst ON
enables burst mode
BUrst OFf
disables burst
BUrst REset
reset burst counters; next trigger will be the first of N.
BUrst
queries burst settings. This will return a string...
Burst OFF N 0000000555 of M 0000002000
4.6.5.GATE COMMANDS
The GATE coaxial connector may be used as an input or an output. As an input, it can
enable or disable triggers under the control of an external TTL level. As an output, it can
indicate when the internal hit flipflop is enabled to accept triggers.