Site Master preventive maintenance consists of cleaning the unit and inspecting and cleaning the RF connectors on the instrument and all accessories. Clean the Site Master with a soft, lint-free cloth dampened with water or water and a mild cleaning solution.
Caution
To avoid damaging the display or case, do not use solvents or abrasive cleaners.
Clean the RF connectors with a cotton swab dampened with denatured alcohol. Visually inspect the connectors. If you are unsure whether the connectors are undamaged, gauge the connectors to confirm that the dimensions are correct.
Carefully inspect the test port cable. The cable should be uniform in appearance, and not stretched, kinked, dented, or broken. A defective test port cable is the most common cause of unreliable or erratic measurements. Extra care should be exercised to ensure the test port cable remain in good condition.
ESD Caution
The Site Master, like other high performance instruments, is susceptible to electrostatic discharge (ESD) damage. Coaxial cables and antennas may build up a significant static charge, which may damage the Site Master. To prevent ESD damage, users are advised to connect a short to either end of the cable before connecting the cable to the Site Master. If no short is available then a termination (load) may be used. Site Master operators must always be aware of the potential for ESD damage and take all necessary precautions. Operators should exercise practices outlined within industry standards such as JEDEC-625 (EIA-625), MIL-HDBK-263, and MIL-STD-1686; which pertain to ESD and ESDS devices, equipment, and practices. It is important to remember that the operator may also carry a static charge that can cause damage. Following the practices outlined in the above standards will ensure a safe environment for both personnel and equipment.
RF Input Warning
The Anritsu Site Master is a sensitive measuring instrument designed to measure low power levels. Avoid damaging this sensitive circuitry by observing the maximum input levels printed on the instrument connector labeling and specified in the product technical data sheet.
Depending on your instrument hardware revision, typical maximum input is +42 dBm or +23 dBm (±50 VDC). Check the RF Out/Reflect In connector labeling on the unit. The maximum RF input could be less if additional features, such as a preamplifier, are in use. Review the product technical data sheet or Anritsu website for recommended components and accessories that can help you protect your instrument. These include a variety of adapters, attenuators, filters, and RF detection accessories.