M1 OPTO Useful for testing two-way radios for frequency measurement in the field or using on the bench, the M1 is a full range 50Hz-2.8GHz frequency counter. Using an embedded micro-controller along with our powerful custom OE40 counter IC, the M1 provides advanced features such as our Patented Digital Auto Filter, Digital Auto Capture, and Data Storage. The M1 BNC input may be switched from 50OHm to 1 Meg Ohm for use with a scope or low pass audio probe for in-circuit measurement of test points and oscillators.

TCXO Optional, The M1 has optional high stability .5ppm TCXO time base. This is twice as stable over time and temperature than most frequency counters.

Features, 50Hz-2.8GHz frequency range,

4-5 hour battery operation,

10 digit LCD display,

16 segment RF signal strength barograph,

100 internal memories,

High speed 250MHz direct count with 1Hz per second resolution,

10 gate times from 100 microseconds to 10 seconds,

High impedance and 50 Ohm amplifiers for full range 50Hz - 2.8GHz coverage,

Includes NiCad's and power supply,

Switchable 1 Meg Ohm input for use with a scope or low pass audio probe,

Standard 1 ppm timebase

Optional .5ppm high accuracy TCXO timebase.

Technical Specifications, Frequency Range 50Hz-2.8GHz,

Input Impedance 50 Ohm / 1Meg Ohm,

Input Coupling AC,

Max Input +15dBm (50mW) 50V AC+DC @ 1 Meg Ohm,

Frequency Time Base 10MHz +/- 1ppm initial accuracy / .5ppm TCXO option,

Display 9 digit LCD,

Size 3.7"H x 2.75"W x 1.2" D,

Power Requirements 9-12VDC, 300-1000mA, centre +

Battery Internal rechargeable 4 cell NiCad,

Battery run time 6-8 hours on full.