The frequency reference uses a temperature compensated voltage-controlled crystal oscillator (2.5 ppm -TCXO). This is a 1.2GHz frequency meter. All settings are automatically saved and can be called directly when the machine is turned on. Single-end input design, frequency measurement channels (low channel/high channel/auto channel) are optional, double intermediate frequency design, intermediate frequency value and plus/minus mode can be preset separately. The gate (screen update) time is 0.01 seconds/0.1 seconds/1.0 seconds, and the frequency value is displayed in real time. Simple circuit, reasonable structure, double button control, simple operation., Weight: 0.10141264052 Pounds, Manufacturer: Rtxbvg