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4 Installation and Operation
This section provides information on details to consider when installing turning on, performance
monitoring, operation, and troubleshooting the SA.22c unit.
4.1 Installation
The following sections provide general installation advice.
4.1.1 Site Selection
The SA.22c can be mounted in any orientation. Ensure that the temperature limits are not exceeded for
the proper functioning of the SA.22c.
The SA.22c is sensitive to external DC and AC magnetic fields (see, ) and Specifications (see page 4)
must not be installed in locations subjected to strong magnetic fields from transformers or large power
supplies. Avoid using a power source that also provides power to fans or equipment that generates high
current pulses.
4.1.2 Turn-On Procedure
The following steps describe how to power up the SA.22c:
Caution: To avoid damage to the SA.22c, do not apply power to the unit in reverse direction.
Verify the SA.22c voltage requirement (see, ).Appendix: Using the Developer’s Kit (see page 16)
Verify that the power supply is set to the correct voltage and is turned off.
Connect the power cable to the SA.22c assembly and turn on the power.
The following block diagram is the suggested connection for turning on the SA.22c.
Figure 7 • Suggested Connections for SA.22c, Initial Turn-on
After the SA.22c starts receiving power, wait until the unit achieves atomic lock (typically 5 minutes).
During this period, the monitored lock signal is HIGH. After the unit achieves atomic lock, the lock signal
goes LOW.
Depending on the base plate temperature, within several minutes the unit should be within 1 × 10 of
–9
the center frequency. Thirty minutes after applying power to the SA.22c, the RF output frequency is
close to full accuracy (see, ).Specifications (see page 4)
Note: The output frequency of the SA.22c is more accurate than most counters. Appropriate
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