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The 53220A 350 MHz Universal Frequency Counter/Timer, 12 digits/sec, 100 ps is a two-channel frequency counter with the ability to make all the frequency and time interval measurements you depend on. An optional microwave channel can be added to measure 6 or 15 GHz. Input Channel Characteristics. Channels: Ch 1 & Ch 2 Standard (DC - 350 MHz), Ch 3 Optional (6 or 15 GHz). Frequency range DC coupled: DC (1 mHz) to 350 MHz (2.8 ns to 1000 sec). Frequency range AC coupled: 50 ohm or 1 Mohm 10 Hz - 350 MHz. Input range: ±5 V (±50 V) full scale ranges. Sensitivity (typ): 20 mVpk (DC - 100 MHz), 40 mVpk (> 100 MHz). Noise: 500 µVrms (max), 350 µVrms (typ). Input event Threshold levels: ±5 V (±50 V) in 2.5 mV (25 mV) steps. Maximum input 50 ohm damage level: 1 W. Frequency, period (average) measurements Ch 1, Ch 2 or optional Ch 3: 12 digits/s. Frequency, period Range: DC (1 mHz) to 350 MHz (2.8 ns to 1000 s). Gate Source: Time, external. Gate time (step size): 100 µs - 1000 s (10 µs). Trigger source: Internal, external, bus, manual. Timebase reference: Internal, external, or auto. Display: 4.3" Color TFT WQVGA (480 x 272), LED backlight. Programming interface: 10/ 100/ 1000 LAN (LAN Sockets and VXI-11 protocol), USB 2.0 (USB-TMC488 protocol), GPIB (IEEE-488.1, IEEE-488.2 protocol). Options. Option 010 Ultra-high-stability OCXO timebase. Option 106 6 GHz microwave input. Option 115 15 GHz microwave input. Option 201 Add rear panel parallel inputs for baseband channels. Option 202 Optional microwave input - front Type N (default if 106 or 115 ordered). Option 203 Optional microwave input - rear panel SMA(f) connector. Option 300 Add internal lithium ion smart battery and charger for unstable AC power or timebase stability.
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