2.0 PREPARATION FOR USE
The Strobe may be hand held or mounted on a tripod or other user supplied
bracket using the ¼-20 UNC bushing at the base of the handle.
The AC powered strobe must have its power cord plugged into an AC
outlet (115Vac or 230Vac).
The battery powered strobe has internal rechargeable batteries. The
unit should be charged before use (see section 7.0). The actual operating
time of the stroboscope depends on the flash rate and duty cycle of
operation. Slower flash rates (below 4,000 FPM) increase the operating
time. Note that the strobe will not operate from the recharger supplied
with the unit.
2.2 Input / Output Connections
The strobe has input and output jacks on the left side of the stroboscope.
These can be used for external triggering or synchronization (daisy
chaining two or more strobes). These jacks accept 1/8" (3.5mm) phone
plugs (input - stereo, output - mono). The input and output are TTL
compatible. See Figures 2 and 3 for connector connection detail.
+6V Out to
+6V Out to
Figure 2 Input Connector Detail (Stereo plug)
7.0 BATTERY POWERED MODELS ONLY
The HHT32R is fitted with rechargeable NiMH (Nickel Metal Hydride)
batteries. These batteries contain fewer toxic metals than NiCd (Nickel
Cadmium) and are currently classified “environmentally friendly”. They
also have 30% more capacity than NiCd batteries of the same size.
Like NiCds, NiMH batteries are prone to self-discharge - 10 to 15% of
charge is lost in the first 24 hours then continues at a rate of 0.5 to 1% per
day. For maximum performance, charge the batteries just prior to use.
When not in use, the batteries should be charged at least every three months,
otherwise the battery capacity will be reduced or the batteries may become
Charge the batteries before use and allow 3-5 cycles of charging and
discharging for batteries to reach full capacity.
The enclosure contains control electronics to properly and safely charge the
batteries. Never remove the batteries from the enclosure and attempt to
charge externally. Always use the charger supplied (HHT32R-URC).
7.1 Low Battery Indication
The Low Battery icon will be displayed differently depending on the
battery voltage. If the Low Battery icon is not displayed, the batteries
are full. Otherwise, the Low Battery icon will indicate that the battery
voltage is decreasing as follows:
Half solid ¾ Full
Half with block blinking ½ Full
Outline only solid ¼ Full
Outline blinking Low battery (very little time left)