The TGR1040, from TTi, is a synthesised RF signal generator which incorporates the essential features required for most development, test and service work, namely frequency accuracy and stability, a wide dynamic range, low phase noise and low leakage.

This instrument uses a fully synthesised source locked to a temperature- compensated crystal oscillator. The frequency can be set to a resolution of 1kHz across the whole frequency range of 10MHz to 1000MHz and yields a precision of one part in one million at 1GHz. The stability is +/-2 parts in one million over a temperature range of 5 to 40 degrees C and the instrument also provides an amplitude range of -127dBm to +7dBm with a setting resolution of 0.1dBm or 0.01mV. The output level steps can be set anywhere between 0.1dBm and 100dBm, while the generator can provide both internal and external FM modulation using either the internally generated 1kHz modulator signal or an external signal in the range 300Hz to 50kHz.

With full remote control facilities, the TGR1040 offers an RS232 interface and a GPIB interface as an option. In addition it can store nine full instrument setups in non-volatile memory which allows repetitive testing procedures to be undertaken quickly and accurately in FM analogue or digital radio receiver sensitivity measurements, system gain measurements, oscillator substitutions and EMC/antenna/field-strength measurements.