User`s guide

Technician Mode
68P02953C05 12-5
8. After the calibration procedure is completed for Max power level, repeat the procedure
for High, Medium and Low levels.
9. Click the OK button to exit the Power Calibration dialog box and complete calibration
using the selected power levels.
12.3. OSCILLATOR CALIBRATION
The Oscillator Calibration command enables the user to calibrate the oscillator frequency and the oven
temperature (for high stability oscillator only). There are two basic calibration modes: automatic and
manual.
The automatic calibration procedure is performed by the radio itself, using an external reference.
The manual calibration procedure can be performed in two different modes, transmit or receive.
• Transmit mode: In this mode, the reference frequency is the frequency of the internal oscillator and
the RF output parameters are measured with high stability measurement equipment.
• Receive mode: In this mode, the reference frequency is external, for example a calibrated radio, a
radio with an accurate frequency source, or external equipment connected to the RF output.
To start calibration, from the Technician menu, choose Oscillator Calibration (ALT, T, S, O). The
Oscillator Calibration dialog is then opened, providing the capability to perform the calibration
procedure. The Oscillator Calibration dialog boxes for Automatic Calibration mode and for Manual
Calibration mode are illustrated below.
For Standard oscillators (Pendulum), the frequency word range is 0-255 and temperature word range is
0-127.
For High Stability oscillators, the frequency word range is 0-4095.
Figure 12-6. Standard Oscillator Calibration Dialog Box
Click to select the calibration
mode.
This field displays the oscillator
type installed in your radio.
Type an external reference
frequency.
The frequency error line
updates while you type.
Click this button to start
calibration
.