Photographic fixer is a mix of chemicals used in the final step in the photographic processing of film or paper.The fixer stabilises the image, removing the unexposed silver halide remaining on the photographic film or photographic paper, leaving behind the reduced metallic silver that forms the image.By fixation, the film or paper is insensitive to further action by light.ixation is commonly achieved by treating the film or paper with a solution of thiosulfate salt. Popular salts are sodium thiosulfate âcommonly called hypoâand ammonium thiosulfate âcommonly used in modern rapid fixer formulae.
DTS Sound is a really impressive feature-set for lower-end products that have to compromise due to price points and application. While DTS Sound isnât a CODEC, it is a technology that integrates well into products who would otherwise not be able to deliver much of the material mastered in todayâs movie soundtracks.
CTCSS is an analog system. A later Digital-Coded Squelch (DCS) system was developed by Motorola under the trademarked name Digital Private Line (DPL). General Electric responded with the same system under the name of Digital Channel Guard (DCG). The generic name is CDCSS (Continuous Digital-Coded Squelch System). The use of digital squelch on a channel that has existing tone squelch users precludes the use of the 131.8 and 136.5 Hz tones as the digital bit rate is 134.4 bits per second and the decoders set to those two tones will sense an intermittent signal (referred to in the two-way radio field as falsing the decoder).