Amplifier Research 250TR7Z5G18
The Amplifier Research 250TR7Z5G18 is a state-of-the-art, self-contained, forced air-cooled broadband traveling wave tube (TWT) microwave amplifier. It is meticulously designed to meet the demanding requirements of applications where instantaneous bandwidth and high gain are critical. This powerhouse provides a conservative output of 250 watts minimum at the amplifier output flange, with power specifications verified at the fundamental frequency.
Equipped with a front panel digital display, users can easily monitor forward and reflected output along with comprehensive system status information through a user-friendly series of menus accessed via soft keys. The status indicators showcase essential operational metrics including:
- Excess Reflected Power Warning
Key features integrated into the 250TR7Z5G18 amplifier include:
- Built-in IEEE-488 (GPIB) interface
- 0 dBm input with VSWR protection
- Gain Control and RF output sample port
- Monitoring capabilities for TWT helix current, cathode voltage, collector voltage, heater current, heater voltage, baseplate temperature, and cabinet temperature
The modular construction of the power supply and RF components facilitates easy access for maintenance and repairs, while a switching mode power supply significantly reduces overall weight for enhanced portability.
Specifications
- Power (fundamental), CW, @ Output Flange:
- Frequency Response: 7.5 - 18 GHz instantaneously
- Input for Rated Output: 1.0 milliwatt maximum
- Gain (at maximum setting): 54 dB minimum
- Gain Adjustment: 35 dB minimum (continuous range)
- Input Impedance: 50 ohms, VSWR 2.0:1 maximum
- Output Impedance: 50 ohms, VSWR 2.5:1 typical
- Mismatch Tolerance: Features output power fold back protection at reflected power exceeding 50 watts. The amplifier is capable of operating without damage or oscillation regardless of source and load impedance magnitude and phase.
- Modulation Capability: Accurately reproduces AM, FM, or pulse modulation appearing on the input signal with AM peak envelope power limited to specified power.
- Noise Power Density: Maximum of -70 dBm/Hz, typically -72 dBm/Hz
- Harmonic Distortion:
- Below 10 GHz: -5 dBc maximum, -7 dBc typical
- 10-12 GHz: -8 dBc maximum, -12 dBc typical
- Above 12 GHz: -20 dBc maximum, -30 dBc typical
- Primary Power: 190-260 VAC, 50/60 Hz single phase, 2.5 KVA maximum
- Connectors:
- RF input: Type N precision female on rear panel
- RF output: Type WRD – 750D24 waveguide flange on rear panel
- RF output sample port: Type N precision female on rear panel
- GPIB: IEEE-488 (f) on rear panel
- Interlock: DB-15 (f) on rear panel
- Cooling: Forced air with self-contained fans, featuring air entry and exit at the rear.
The AR 250TR7z5G18 Amplifier is expertly crafted for 19-inch rack mounting, featuring four convenient side-mounted carry handles and non-slip feet for secure bench-top use. This amplifier is invaluable for a wide range of applications including Test and Measurement, EMC RF susceptibility testing, Industrial and University Research and Development, and various Service Applications.
