Instrument Care and Preventive Maintenance

Site Master care and 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.

Clean the RF connectors and center pins with a cotton swab dampened with denatured alcohol. Visually inspect the connectors. The fingers of the N(f) connectors and the pins of the N(m) connectors should be unbroken and uniform in appearance. If you are unsure whether the connectors are undamaged, gauge the connectors to confirm that the dimensions are correct. Visually inspect the test port cable(s). The test port cable should be uniform in appearance, and not stretched, kinked, dented, or broken.

To prevent damage to your instrument, do not use pliers or a plain wrench to tighten the Type‑N connectors. The recommended torque is 12 lbf · in to 15 lbf · in (1.36 N · m to 1.70 N · m). Inadequate torque settings can affect measurement accuracy. Over-tightening connectors can damage the cable, the connector, the instrument, or all of these items.

Visually inspect connectors for general wear, cleanliness, and for damage such as bent pins or connector rings. Repair or replace damaged connectors immediately. Dirty connectors can limit the accuracy of your measurements. Damaged connectors can harm the instrument. Connection of cables carrying an electrostatic potential, excess power, or excess voltage can damage the connector, the instrument, or both.

3. To tighten, turn the connector nut, not the connector body. Major damage can occur to the center conductor and to the outer conductor if the connector body is twisted.

4. When you use a torque wrench, initially tighten by hand so that approximately 1/8 turn or 45 degrees of rotation remains for the final tightening with the torque wrench.

Relieve any side pressure on the connection (such as from long or heavy cables) in order to assure consistent torque. Use an open‑end wrench to keep the connector body from turning while tightening with the torque wrench.

Remove O-rings from the test cable and be sure that the connectors are clean. If the DUT connector has an O-ring, then use a torque wrench to tighten the connector.

Note

When testing, cables are connected and disconnected many times. In order to save wear on these test cables and RF adapters, Anritsu recommends removing the O-rings. This allows getting a sufficiently tight connection without unnecessary stress on the connectors. In the field, O-rings are important to maintain connection integrity over long time periods. Connections must be torqued to specifications in order to ensure that they prevent water intrusion.

During your test, if the DUT connector has an o‑ring, leave it in place and tighten to the correct torque.

Anritsu recommends using an adapter on the intrument's 7/16 DIN female RF Out connector to act as a connector saver. Typically, the instrument's connector has a useful life of 500 matings. A 7/16 DIN(f) to 7/16 DIN(m) and 50 Ω connector saver reduces wear on the connector, and may stay on the instrument while it is in the soft case or transit case. One connector saver is provided with your test instrument.

The recommended torque for attaching the connector saver to the instrument is 25 N · m
(~18 lbf · ft). Use a torque wrench to make the connection.

Replacement connector savers can be purchased from Anritsu. The part number is in your Technical Data Sheet.

The PIM Master, like other high-performance instruments, is susceptible to electrostatic discharge (ESD) damage. Coaxial cables and antennas often build up a static charge, which (if allowed to discharge by connecting directly to the PIM Master without first discharging the static charge) may damage the PIM Master input circuitry.

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. Because these apply to the PIM Master, Anritsu recommends that any static charges that may be present be dissipated before connecting coaxial cables or antennas to the PIM Master. This may be as simple as temporarily attaching a short or load device to the cable or antenna prior to attaching to the PIM Master. It is important to remember that the operator may also carry a static charge. Following the practices outlined in the referenced standards will ensure a safe environment for both personnel and equipment.

The batteries that are supplied with the PIM Master may need charging before use. They can be charged using either the AC‑DC Adapter or the DC adapter. The batteries can also be charged by using an external charger (refer to your Technical Data Sheet). Refer to Battery Care.

Note

Use only Anritsu Company approved batteries, adapters, and chargers with this instrument.

The batteries charge at a faster rate when the instrument is turned off. Charging the batteries while the instrument is running requires a longer time to reach a full charge.

To prolong the useful battery life, the internal charging circuit monitors the battery temperature. Normal charging occurs when the battery temperature is between 0 °C and 45 °C. Charging is paused if the internal battery temperature is beyond this range.

Anritsu Company recommends removing the battery for long-term storage of the instrument.

Caution

When using the Automotive Cigarette Lighter Adapter, always verify that the supply is rated for a minimum of 40 Watts at 12 VDC, and that the socket is clear of any dirt or debris. If the adapter plug becomes hot to the touch during operation, then discontinue use immediately.

The PIM Master batteries can be replaced without the use of tools. The battery compartment access is on the bottom of the PIM Master. Refer to Battery Replacement.

Refer to PIM Master Firmware Update for firmware upgrade procedures.

Field-calibrate your PIM Master as required to achieve acceptable residual PIM. The instrument provides calibration prompts to help you determine calibration status. Anritsu recommends annual factory calibration and performance verification by local Anritsu service centers. The Cable and Antenna Analyzer mode requires calibration standards for OPEN, SHORT, and LOAD (OSL), which are sold separately.

Browser-based control allows you to remotely control the PIM Master from any Wi‑Fi enabled device with web browser software (Chrome or Firefox preferred). This includes a wide range of tablets and phones running Android or iOS operating systems as well as the traditional Linux and Windows laptop and desktop computers.


	Anritsu Company 1-800-ANRITSU 10450-00050, Rev. M