EMCO THERMOGRAPHIC PHOSPHOR LABKIT
INSTRUCTION MANUAL
COMPONENTS IN THE SYSTEM
1. Pulsed LED light source is part of the LED lens tube assembly item 7 (Figure 1 and
Figure 2)
2. Circuit board to provide power and control to the Labkit, including an electronic pulser
for the LED with a range of amplitude, time duration, and frequency (Figure 1)
3. Phosphor sample holder clamped to Peltier cooler/heater (Figure 1 and Figure 2),
which has adjustments and readout on the front panel (see Figure 3)
4. Narrow band filter is housed in the PMT lens tube assembly (Figure 2)
5. Photomultiplier tube (Figure 1 and Figure 2), with gain adjustment on the front panel
(Figure 3).
6. Cooling fan (Figure 1)
7. The LED lens tube assembly is made up of two lens tubes: a 2” tube which houses the
LED focusing lens (item 8) (Figure 1 and Figure 2) and a ½” lens tube which houses the
LED (item1) and the LED input filter (item 9) (Figure 1 and Figure 2)
8. LED focusing lens (Figure 2)
9. LED input filter (Figure 2)
10. External trigger for LED pulser, with BNC cable input on back panel (see Figure 4)
11. Internal trigger from LED pulser, with BNC cable output on back panel (see Figure 4)
12. Removable panels to allow external access, including fiber optics (Figure 1)
13. Trigger source switch to select internal or external triggering of the LED pulser (see
Figure 4)
14. Photomultiplier tube output (see Figure 4)
These components are shown in Figure 1-4 and labeled by the number in the list above.
Figure 2 shows the optical cage cube assembly. Figure 3 shows the front panel of the
Labkit, which has the control and readout for the heating and cooling of the phosphor
sample (left section), the photomultiplier control, including the power switch and gain
adjustment (upper center section), and the control for the pulse width and repetition rate
of the pulser driving the light source (just below the photomultiplier controls). Figure 4
shows the back panel of the labkit. Seen there are the main power plug for 120VAC, and
on/off switch (lower center), the switch to select external or internal triggering of the
light source pulser, and three BNC plugs. The upper BNC is the signal output from the
photomuliplier. It is a high impedance signal that should be terminated at the recording
electronics (typically, an oscilloscope). The middle BNC is the internal trigger output
pulse from the light source pulser, available when the pulser switch selects internal trig-
ger. The lower BNC allows an input pulse to trigger the light source pulser when the
pulser switch is in the external position.
