Programmable Controls
Lynx DSA User's Manual - 9240227J
143
With polarity set to POSITIVE, READY=1 when a TTL-high signal (or no
connection) is at the CHGR RDY input. With polarity set to NEGATIVE, READY=1
when a TTL-low signal is at the CHGR RDY input.
READY POLARITY
Controls the interpretation of the CHANGER READY read-only parameter. Can be
set to POSITIVE (default) or NEGATIVE. See CHANGER READY above for
details.
ADVANCE
When a Changer Advance command is received, the Lynx produces a TTL-
compatible advance pulse whose polarity is determined by the ADVANCE
POLARITY setting; POSITIVE produces active-high pulse, NEGATIVE produces
active-low pulse. Pulse width is approximately 150 milliseconds. Pulse output is on
the rear panel’s CHGR ADV connector.
ADVANCE POLARITY
Defines the TTL-active state of the changer advance pulse. See ADVANCE above
for details.
Synchronization
EXTERNAL SYNC STATUS
Disables or Enables the main synchronization electronics within the Lynx. External
Synchronization must be enabled when synchronizing multiple Lynx units. Settings
are DISABLED, ENABLED, or INDEPENDENT.
•
DISABLED
disables synchronization in Lynx. Default mode.
•
ENABLED
enables external synchronization in Lynx with connection to all
internal acquisition units (MSS, AUX, SCA’s, and LIST/TLIST) requiring
and external sync signal.
•
INDEPENDENT
enables external synchronization in Lynx, but each
acquisition unit (MSS, AUX, SCA’s, and LIST/TLIST) within the Lynx has
independent control for internal or external synchronization.
EXTERNAL SYNC MODE
Sets the Lynx’s external synchronization for MASTER to control other units, SLAVE
to be controlled by another Lynx. Settings are SLAVE (default), MASTER A, or
MASTER B.
•
SLAVE
sets the Lynx to be controlled by an external signal supplied through
the rear panel’s SYNC connector.
•
MASTER A
produces an 200 nanosecond pulse on the SYNC output whose
period in milliseconds is set EXTERNAL SYNC PULSE setting.
