Jadak PHOTO RESEARCH SpectraScan PR-655, Руководство пользователя

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PR-655/670 User Manual
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FIGURE 75 - LR-127
I
NSTALLING THE
LR-127
1. Remove the current optical accessory from the PR-655/670 by turning counter-clockwise.
2. Remove the lens mount (Instrument Side – see Figure 75) by loosening the thumb screw that secures
the mount to the main section of the LR-127.
3. Screw the lens mount into the PR-655 lens ring. DO NOT OVERTIGHTEN the mount.
4. Slide the main section of the LR-127 onto the lens mount.
5. Rotate the main section until the slide is approximately horizontal and tighten the thumb screw.
I
NSERTING THE
LED
1. Tighten the small screw in the LED adapter until the ball tip slightly protrudes into the channel. This will
insure a snug fit of the LED by pushing it against the opposite wall of the adapter.
2. Insert the LED adapter into the main section of the LR-127 (LED Side – see Figure 75) then tighten the
thumb screw to secure it.
3. Gently insert the T1.75 (5 mm) LED into the acceptance port of the adapter.
4. Energize the LED to the desired current and allow sufficient warm up.
M
AKING A
M
EASUREMENT
1. Turn on the PR-655 / PR-670. Allow at least 5 minute warm up before making critical measurements.
2. From the Instrument Setup menu, touch the
▲ ▼
icons adjacent to the Primary Accessory field to select
LR-127A.
3. Modify other settings (aperture etc.) as necessary.
4. Press the MEASURE button to make a measurement and display the results. The photometric values for
the LR-127 are given in luminous intensity (millicandelas).
5. Record the reading.
6. Repeat Step 2 and select LR-127B .
7. Touch the MEASURE button to make a measurement. Record the results.
8. Find the average of the readings from Steps 4 and 7.
Instrument Side
LED Side
A / B Slide