UA-6 Detector
Section 1 Introduction
1-6
Figure 1-3 UA-6 Rear Panel
7
SENSITIVITY
0.002, 0.005, 0.01,0.02,
0.05, 0.1, 0.2, 0.5, 1.0,
2.0, set lamp and optics
Rotary selector switch
Used to establish the full-scale absorbance range.
Set lamp and optics: This position overrides AUTO
BASELINE and provides equal voltage to the opti-
cal unit photocells. At this time, the optical unit
should be balanced. It also initializes the lamp cur-
rent adjust circuit. (Type 11 only).
8
RECORDER OFFSET
Rotary control
Used for fine positioning of the absorbance
baseline (zero).
9
NOISE FILTER
0.5, 1.5, 5.0
3 position selector switch Reduces noise by employing a Bessel-type active
filter. The 0.5, 1.5 and 5.0 positions indicate the
approximate theoretical response time in seconds
for 10 to 90 percent full-scale output deflection.
10
Standby-Operate LED
Indicator lamp
Lights to indicate that secondary power is applied
to circuitry and the unit is in operational status.
RED: Type 11 lamp is warming up. Red after warm
up indicates lamp current needs to be reset!
GREEN: Type 11 lamp current is proper, ready for
operation.
Table 1-2 Front Panel Controls and Indicators (Continued)
Item in
Fig. 1-2
Control or Indicator
Description
Function
11
10
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