3. Test Procedures:
Model 636 Flash Timing Aperture The purpose of
this test is to measure blade aperture at the
point of flash fire.
DETAILED PROCEDURE SUMMARY
1. Turn the test selector switch to 1. Selector to FT and BB
Ft and BB APERTURE. APERTURE.
2. Flip the MODE switch to APERTURE. 2. Mode switch to APERTURE.
3. Plug the strobe/flash detector 3. Plug in strobe/flash
fixture #12790 into the B-600 detector. Install detector
jack as shown in Figure 2. Install clip on camera.
the strobe detector clip over the
camera strobe.
4. Set the light source selector to 4. Light source to 100
100 cd/sq ft. cd/sq. ft.
5. Install the door pawl closure 5. Install door pawl
#12082 in the camera and set the closure. Set camera on
camera on the horn. (RESET) Align horn in front of light
the camera in front of the light source.
source.
6. Cover the camera photocell with 6. Cover photocell, fire
finger and press S10/S1 until strobe.
strobe fires.
7. When strobe fires, record reading 7. Compare reading to spec.
shown on Relative Error in Stops
meter. Compare the reading to
the specification.
8. Repeat steps 6 and 7 two more 8. Repeat steps 6 & 7 twice
times to insure accurate reading.
9. If reading is not within specifi- 9. If out of spec, see Adjustments.
cation, refer to Adjustments.
110
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