The manual for the Wavetek Model 1801A Sweep/Signal Generator provides detailed instructions for its installation, operation, maintenance, and repair, including features like a built-in RF detector, external leveling circuitry, and a crystal-controlled birdy marker system. It also covers troubleshooting aspects, such as the use of modular construction for ease of maintenance and modifications, and provides specifications for remote programming and external modulation.
Overview
Refer to the PDF for details.
Specifications
- Frequency Range – Band, Band 2
- Operating Modes – Sweep and CW
- Frequency Dial Calibration + 10 MHz intervals
- Accuracy – 10 MHz or 2% of selected frequency
- Vernier Frequency Control = " +5 MHz
- Sweep Width – 200 kHz to 500 MHz
- Display Linearity – re4
- Spurious Signals – At least 30dB below the output from 10 to 300 MHz
- At least 26dB below the output from 300 to 950 MHz
- Residual FM – Less than 15 kHz
- Drift – 100 kH2/5 minutes-2MHz/8 hours
- Blanking – Retrace blanking of the RF output provided for sweep operation
- RF Output Impedance – 75 ohms
- Max Level – +57dBmV (.7V¥rms)
- Flatness – +.35dB at max level over both bands
- Attenuation – Coatiruously adjustable from +57dBmV to -33dErny¥
- 70aB attenuator~in 10dB steps
- 20dB vernier + calibrated in 1dB steps
- Accuracy of 70dB Step Attenuator +.5dB to 500 MHz
- +1dB to 950 MHz
- Accuracy of 20dB Vernier Attenuator +.5dB to 500 MHz
- +1dB to 950 MHz
- Reference Attenuator – Provides a precise level change above and below the set output level
- Remote Programming – Frequency, Sweep Width and the 0 to 20dB Vernier output control
- External FM – The full frequency range can be swept at rates up to 4 kHz
- External AM – External AM signals are applied to the same connections as for vernier 0-20dB control
- Sweep Modes – Repetitive sweep, Single sweep, Externally triggered sweep, Manual sweep, Line-lock sweep
- Sweep Time – Continuously variabfe from 10 to 100MSEC and from 1 second to 100 seconds
- Horizontal Output – 16 volts peak-to-peak
- External Leveling – External Monitor (ALC) – may be used to level the RF output
- Marker Specifications – Type – Birdy by-pass markers
- Accuracy – 0.005%
- External Marker Input – Rear Panel BNC connector
- Marker Width – Adjustable from (approx) 15 to 400 kHz in four steps
- Marker Size – Adjustable from (approx) 1V to ImV peak-to-peak
- Rectified Birdy – Internal switch removes the negative portion of the birdy marker
- Marker Modulation – Markers may be used to modulate the RF output signal
- Power Requirements – Line Supply 115 or 230 VAC +10%, 50 to 60 Hz, (approx. 20 watts)
- Mechanical Specifications – Net – 20 lbs.
- Shipping – 25 lbs.
Controls & Indicators
Refer to the PDF for details.
Installation / Setup
Refer to the PDF for details.
Operation
The Wavetek Model 1801A Sweep/Signal Generator operates in sweep and continuous wave (CW) modes. It covers a frequency range from 1 to 500 MHz, extendable to 950 MHz with the high band. The device can sweep each band entirely or reduce the sweep width to CW operation. It offers a calibrated 75 ohm output system with an adjustable attenuation range from +57dBmV to -33dBmV. The sweep can be set at line frequency, 60 Hz, or as slow as 1 sweep in 100 seconds. A special sweep rate position is available for faster testing with adjustable sweep time from 1 to 10 milliseconds and repetition rate from 1 to 10 seconds. The device supports remote programming for frequency, sweep width, and vernier output control. Sweep modes include repetitive, single, externally triggered, manual, and line-lock sweep, with sweep time adjustable from 10 to 100 milliseconds and 1 second to 100 seconds.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
Refer to the PDF for details.
Download SPEC Manual (PDF – 196.2 KB)
Wavetek 1801a SPEC manual: assists technicians in troubleshooting and calibrating the device. File size: 196.2 KB.
- Brand: Wavetek-model-1801a
- Model: SPEC
- Type: Manual
- File size: 196.2 KB
Downloads
Wavetek-model-1801a SPEC – Device Overview
The Wavetek-model-1801a SPEC is a precision signal generator designed for testing and calibration in electronic laboratories and field environments. This versatile instrument produces stable and accurate waveforms across a wide frequency range, making it ideal for applications such as RF testing, communications troubleshooting, and component characterization. Its robust design and user-friendly interface ensure reliable performance for both novice and experienced technicians.
Main Features and Specifications
- Frequency Range: 10 Hz to 180 MHz
- Output Waveforms: Sine, Square, and Triangle
- Frequency Stability: ±5 ppm over 8 hours
- Amplitude Range: 0.1 mV to 10 V RMS
- Modulation Capabilities: AM, FM, and Pulse modulation
- Digital Frequency Display for precise tuning
- Compact and rugged chassis for field use
- External Frequency Reference Input
Basic Usage and Operation Tips
To operate the Wavetek-model-1801a SPEC, first power on the device and allow it to warm up for at least 15 minutes to ensure frequency stability. Select the desired waveform type and adjust the frequency using the digital dial or keypad. Set the output amplitude carefully to match the input requirements of the device under test. Utilize the modulation functions for advanced testing scenarios. Always connect the output to a suitable load or measurement instrument to avoid damage.
Troubleshooting and Maintenance
If the output signal is unstable or distorted, verify all cable connections and ensure the device has completed its warm-up period. Check the internal fuse if the unit fails to power on. Periodic calibration is recommended every 12 months to maintain accuracy. Clean the exterior with a soft, dry cloth and avoid exposure to moisture or extreme temperatures. For persistent issues, consult the detailed manual or contact authorized service centers.
Safety Reminder
Always operate the Wavetek-model-1801a SPEC in a dry, well-ventilated area. Avoid touching exposed connectors during operation to prevent electric shock. Disconnect the device from power before performing any maintenance or cleaning. Follow all local electrical safety regulations and use proper grounding techniques when connecting to other equipment.