zTo enter a mixed number, enter the integer part, press [ a b/c ], enter the numerator, press [ a b/c ], and enter the denominator ; To enter an improper fraction, enter the numerator, press [ a b/c ], and enter the denominator. See Example 28.

zDuring a fraction calculation, if the figure is reducible, a figure is reduced to the lowest terms after pressing a function command

key ( [ + ], [ – ], [ x ] or [ ] ) or the [ ] key. By pressing

[ 2nd ] [ a b/c d/e ], the displayed value will be converted to the improper fraction and vice versa. See Example 29.

zTo convert between a decimal and fractional result, press [ 2nd ]

[ FD ] and [ ]. See Example 30.

zCalculations containing both fractions and decimals are calculated in decimal format. See Example 31.

„Angle Unit Conversion

zThe angle units (DEG, RAD, GRAD) is set by pressing [ DRG ] to display the angle menu. The relation among the three angle units is :

180°=πrad = 200 grad

Angle conversations ( See Example 32. ) :

1.Change the default angle settings to the units you want to convert to.

2.Enter the value of the unit to convert.

3.Press [ DMS ] to display the menu. The units you can select

are ° (degrees), ′ (minutes), ″ (seconds), r (radians), g (gradians) or DMS (Degrees-Minutes-Seconds).

4.Choose the units you are converting from.

5.Press [ ] twice.

zTo convert an angle to DMS notation, select " DMS " which converts an entry to DMS notations, i.e., where 1°30′0″ represents 1 degrees, 30 minutes, 0 seconds. See Example 33.

zTo convert a DMS notation to decimal, select °(degrees), ′ (minutes), ″ (seconds). See Example 34.

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Citizen SRP-280N/SRP-285N manual „ Angle Unit Conversion
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SRP-280N, SRP-280N/SRP-285N specifications

The Citizen SRP-280N and SRP-285N are both advanced thermal printers designed to meet the needs of various industries, including retail, hospitality, and logistics. Known for their reliability and performance, these models are particularly favored for their speed and efficiency in printing receipts and labels.

One of the standout features of the SRP-280N is its high-speed printing capability. It can produce printouts at an impressive rate of 200 mm per second, ensuring that businesses can process transactions quickly, which is crucial during peak hours. Similarly, the SRP-285N offers rapid printing speeds, making it ideal for environments where time is of the essence.

Both models utilize direct thermal printing technology, which eliminates the need for ink or ribbons, reducing maintenance costs and downtime. The printers are equipped with easy-to-load paper mechanisms, allowing users to quickly replace paper rolls with minimal disruption to workflow. This feature is particularly advantageous for high-volume settings where efficiency is paramount.

The Citizen SRP-280N and SRP-285N support a variety of paper widths, making them versatile for different printing tasks. The models can handle standard thermal paper rolls, commonly used for receipts, as well as labels, catering to diverse business requirements. This flexibility is further enhanced by the compatibility of both printers with various operating systems, including Windows and Android, ensuring seamless integration into existing systems.

Connectivity is another key aspect of the SRP-280N and SRP-285N offerings. Both printers come equipped with multiple interface options, including USB, Ethernet, and Bluetooth, allowing users to connect to various devices seamlessly. This feature is particularly useful for businesses adopting mobile payment systems or those needing to connect multiple devices to a single printer.

Additional characteristics of these models include a compact design that saves counter space, as well as robust construction for durability in demanding environments. They also feature an energy-efficient design, contributing to lower power consumption while operating, aligning with modern needs for sustainability.

Overall, the Citizen SRP-280N and SRP-285N printers combine speed, versatility, and durability, making them an excellent choice for businesses that require reliable printing solutions. With their advanced technology and thoughtful design, these printers can significantly enhance operational efficiency in any setting.
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