User's Manual for Nikon Original Speedlight SB-1
Content contributed by: Mr. Werner Schrittesser <werner.schrittesser@chello.at>

1) Nikon SPEEDLIGHT UNIT: Probably can be regarded as Nikon's first auto thyristor-controlled flash unit. It was systematically designed to permit using various types of power sources, and ingeniously designed two types of Ringlight units, the Nikon Speedlight is an electronic flash which ensures successful exposures in all application fields of photography. (Fig. 1)

• The guide number is maintained accurate throughout the life of every type of battery being used.
• The neon pilot lamp indicates the readiness for firing at a maximum (95%) output of light at all times.
• When the power is supplied by NiCd battery, it enables firing at an interval down to about 4 seconds when the main unit is fully charged.
• Besides the main light unit an additional use of up to 2 units is possible.
• Bounce light is performed by tilting the bracket to a desired angle.
• Uniform illumination is attained within the range of angle, 65 degrees.
• Simple replacement of NiCd battery allows the use of the unit for any desired number of firings, as long as spare charged batteries are at hand.
• The built-in automatic voltage stabilizing circuit in the main unit serves to keep the light output constant, thus ensuring the correct guide number.

3) CHARACTERISTICS/TECHNICAL HIGHLIGHTS

a ) Recycling time:
• With NiCd battery: About 4 sec. (fully charged)
• With 6 " D " cells: About 5 sec (High-rate)
• With 6 " D " cells About 4 sec. (Alkaline)
• With 510-volt battery: About 1.5 sec.
• With AC unit and charger: About 5 sec.

b) Number of flashes • With NC battery: About 80 flashes (fully charged) • With " D " cells About 300 flashes (High-rate) • With " D " cells: About 1,000 flashes (Alkaline) • With 510-volt battery: About 700 flashes c) Flash duration: About 1/2,000 sec. d) Coverage of light: 65° e) Colour temperature: 6,000'K f) Life of flash tube: About 30,000 times

g) Guide number: For Black & White film ASA 125: About 149 feet For Colour film ASA 25: About 46 feet g) Light extension: Available up to 2 units besides the Main unit with extension cords. h) Automatic volt stabilizing circuit provided i) Open flash button provided j) Bounce flash by the bracket tilted every 30°from 0° to 120°backward

k) Batteries to be used
Exclusive NiCd battery:
• D-cells (6 pieces): Used with the D-cells pack SD-2
• 510 volt battery: 510 V Eveready No. 497 Used with the battery pack SD-1
l) AC unit & charger: Used also as AC power for the Main unit and for recharging the NiCd battery. Input voltage is changeable to 100, 117, 220 and 240 volts.
Weight: Main unit: About 670g (NiCd battery 165g included)
Bounce bracket: About 270 g
AC unit & charger: About 1,000g

Content contributed by: Mr. Werner Schrittesser

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