Chapter 4 System Setup
54 Lynx DSA User's Manual - 9240227J
Auto P/Z
Initiates automatic pole/zero adjustment. The Auto P/Z process can be initiated only
when acquisition is off. Once started, the Auto P/Z process will terminate either when
(a) convergence is achieved, or (b) a timeout of approximately 180 seconds has been
reached. In case of timeout, an error will be reported that convergence was not
successful.
Preamp Type
Selects the preamplifier type as either RC (resistive-capacitive filter) or TRP
(transistor reset). Pole/Zero and Auto Pole/Zero adjustments are disabled for TRP
Preamp Type. The internal Pole Zero value will be set to zero (time constant of
infinity) when TRP Preamp Type is selected.
Sample Changer Parameters
The Sample Changer controls are accessible from a PHA or MCS datasource if a
sample changer driver was selected during the definition of the datasource in the
MID Editor. The datasource type is defined during the MID Editor or MID Wizard
session by selecting MCA Number 1 for PHA or Number 2 for MCS.
The sample changers settings displayed are dependent of the type of sample changer
selected in Sample Changer device setting (see Sample Changer).
Internal Sample Changer
The Internal Sample Changer settings selection for the Lynx for either a PHA or
MCS definition contains the following controls.
Figure 26: Sample Changer Settings for PHA Definition
Ready
Used by the Internal Chgr sample changer selection. Controls the interpretation of
the Lynx’s rear panel’s CHGR RDY sample changer input signal to produce a
“Changer is Ready” condition. With Positive selection the Lynx will interpret a TTL-
high signal as “Changer is Ready”, whereas with Negative selection the Lynx will
interpret a TTL-low signal as “Changer is Ready”.
If the “Changer is not Ready” then the start of a PHA or MCS acquisition will be
deferred until the “Changer is Ready” condition is met or acquisition is aborted.
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