Model 636 Zonal Lumen Seconds (ZLS) Output This test measures the output of
the strobe in a standard integrating sphere located within the Tester. The light output
measurement is integrated over the duration of the flash and the measurement is
displayed as correlated zonal lumen seconds on a meter on the Tester.
NOTE: This test is not necesssary if Strobe Exposure Test is within spec.
DETAILED TEST PROCEDURE SUMMARY
1. Turn the Test Selector Switch 1. Selector to ZLS. (No close-up
located in the middle of the lens.)
panel to ZLS. (Be sure the
closeup lens is not in place.
2. Erect the flash and open the 2. Erect flash, open door, install
camera door. Install door pawl door pawl closure.
closure #12082.
3. Install the camera on the Star horn. Align 3. Install camera on horn. Align to
the camera so the flash fits into strobe Tester.
adapter #12657B on the tester. (To assure
repeatable readings, the flash must be fully seated
in the adapter and pushed against the left wall with
the front of the apron firmly against the light box.
4. Press the Reset Button. 4. Press Reset.
5. Cover the photocell on the 5. Cover photocell, press S1/S10
camera and press Sl/S10 fully to fire flash.
to charge and fire the flash.
6. When the flash fires, observe the reading 6. Record reading on ZLS meter.
on the ZLS meter. Record the reading and Also check recycle time and
compare it to the specification. NOTE: In current drain. Compare
this test,l in addition to ZLS, you can also readings to spec.
observe strobe recycle time on the Timing
meter and amp/seconds on the DC Current meter.
7. Repeat Steps 4, 5 and 6 two more times to 7. Repeat 4, 5 & 6 two more times.
insure accurate readings.
8. If ZLS, Recycle Time or Amp 8. If readings are out-of-spec,
Seconds are not within specific- replace strobe.
ation, replace the strobe.
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