RH DESIGNS STOPCLOCK PRO 110v Includes: • Mains lead • enlarger/safelight connectors • instructions. Features: • Base exposure time 1.0 seconds to 240 seconds, in steps of 1/24th to 1/2 f-stop (or of 0.1 or 1.0 seconds in linear time mode). Time is controlled to 0.01 seconds. • All exposure times are set in coarse and fine steps of actual exposure rather than simple seconds, producing consistent changes on the paper. The fine step size is 1/24th f-stop (approx. 2%). The coarse step size can be set to 1/2, 1/3, 1/4, 1/6 or 1/12 of a f-stop. Coarse/fine button toggles between 1/24th and the set coarse time step. • Nine subsequent exposure times can be programmed, each calculated either relative to the base exposure or the total exposure time thus far. Burn-in exposures are set in steps of 1/12th to 1/2 f-stop. If the base exposure is changed, the burn-in exposures are recalculated to maintain the density relationships. • Two completely independent channels, each having separate base and burn-in exposure times. • Split-grade mode, in which exposure can be controlled using one channel while the second can be used to adjust contrast. Equivalent contrast is displayed in steps of 0.1 grade. • Automatic test strip mode, for quickly producing test strips with 1/12th to 1/2 stop increments either as an incremental exposures or separate complete exposures. • Exposure Compensation of /-20% to allow for dry-down or and/or toning with respect to a test print. • The clear yellow LED display brightness can be set to one of three levels. The display color has been chosen to be safe for both colour and black and white printing. • Audible beep at the end of each exposure, and optional seconds tick whilst the enlarger is switched on. • Rugged steel enclosure and high quality components for reliability. Illuminated control buttons. • Can be connected to our ZoneMaster for exposure metering. • Automatic safelight switching; manual (focus) mode; 750 watts (500 watts in 115v versions) switching capacity • A footswitch is available as an optional extra for hands-free operation – see the accessories page. • Exceptionally easy to use! All timing, including switching between channels, can be controlled from the footswitch. Specs: • Timing accuracy: Better than 1% • Timing repeatability: Better than 0.1% • Exposure setting accuracy: Better than 1%; resolution 1/24th stop. • Timing range: 1.0 to 240 seconds per step, up to ten steps per channel, two channels. • Timing resolution: 0.01 sec. • Switching capacity: 750W per outlet, 750W total (230V only; 500W total for 115V version.). Suitable for cold light enlargers. • Display type: Yellow LED, three levels of dimming, 590nm LEDs are safe for color as well as b w papers (Safe except for direct exposure – dimmer than the filtration control lighting on most enlargers) • Size: WHD 200mm x 65mm x 160mm (7.8 x 2.5 x 6.3 inches) • Weight: 2200g approx as shipped. • Input voltage: 110V
