Ametek 7124 Instruction Manual page 104

Chapter 5, FRONT PANEL OPERATION
5-50
The ADC menu has a control to set the auxiliary ADC inputs trigger mode, an
indicator showing the effecting time per point, four displays to show the voltages at
the main console rear-panel ADC1 to ADC4 inputs and a key to access the Curve
Buffer menu.
The control operates as follows:
ADC TRIGGER MODE
This control has the following possible settings:-
INTERNAL
A conversion is performed on ADC1, ADC2, ADC3 and ADC4 every 1 ms, with
the results being displayed on the right of the screen and being available via the
computer interfaces.
EXTERNAL
A conversion is performed on ADC1, ADC2, ADC3 and ADC4 on receipt of a
rising edge at the TTL ADC TRIG IN connector on the rear panel on the main
console. The maximum trigger rate is 10 kHz. The results are displayed on the
right of the screen and are available via the computer interfaces.
BURST ADC1
The burst modes are for use in conjunction with the curve buffer operating in the
Fast mode. When Burst ADC1 is selected, a burst of conversions at the rates set
by the curve buffer TIME PER POINT control is performed on ADC1 only. The
results are stored to the curve buffer, with the number of conversions being set
by the curve length control on the Curve Buffer menu - see section 5.3.24.
BURST ADC1&2
When Burst ADC1&2 is selected, a burst of conversions at the rates set by the
curve buffer TIME PER POINT control is performed on both ADC1 and ADC2.
The results are stored to the curve buffer, with the number of conversions being
set by the curve length control on the Curve Buffer menu - see section 5.3.24.
NOTE: When either of the burst acquisition modes is selected, the instrument
automatically changes the curve buffer acquisition mode to Fast.
Figure 5-39, ADC Menu