A benchtop synthesized function generator produced by GW Instek, model SFG-2104. The instrument is housed in a light-coloured casing and features a front-facing control interface. The faceplate bears the inscription GW Instek SFG-2104 Synthesized Function Generator. The control layout includes a numeric keypad, a large rotary frequency dial, and dedicated function buttons for MHz, kHz, Hz/%, Shift, AM, Ext Mod, Duty, -20dB, TTL, FM, Sweep, Store, Counter, Default, and Recall. Below a digital display screen, there are five rotary adjustment knobs for controlling AMPL, OFFSET, TTL/CMOS, SWEEP TIME, and SWEEP SPAN, accompanied by specific scale markings such as MIN/MAX, SLOW/FAST, and LOG/LIN. Three BNC terminals are located on the right side of the faceplate, labelled OUTPUT 50 Ohm, TTL/CMOS OUTPUT, and COUNTER INPUT, with the latter noting a maximum AC 30Vrms limit. A push-button power switch is located at the bottom left. The unit is equipped with a carrying handle and is accompanied by a black power lead with a UK plug.
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