Tait Orca series - Page 31

11/98 IPN: 449-51000-01 Diagnostics and fault finding C - 7
Table C-1: Calculating the parameters required for test command 101
Calculating parameters for test command
101
Enter the parameters in the format tttttt T rrrrrr R F
■
tttttt represents the transmit frequency
See Example 1
■
T and R represent channel spacing
0 = 5 kHz
1 = 6.25 kHz
■
rrrrrr represents the receive frequency
See Example 2
■
F indicates whether the test command changes
the calibration values
0 = do not change calibrated values
1 = recalculate calibrated values based on new
frequencies
Note: tttttt and rrrrrr may be up to 6 digits long.
Example 1: Calculating tttttt for an H band
radio
Example 2: Calculating rrrrrr for an H band
radio
Note: IF depends on the radio’s switching band.
■
For B, C and D bands radios, the IF is 21.4 MHz.
■
For E, F, G, H and I band radios, the IF is 45.1
MHz.
transmit frequency (MHz)
channel spacing (MHz)
tttttt =
461.025 MHz
6.25 kHz
=
461.025 x 10
6
Hz
6.25 x 10
3
Hz
=
73764
=
receive frequency (MHz) - IF (MHz)
channel spacing (MHz)
rrrrrr =
461.025 MHz - 45.1 MHz
6.25 kHz
=
415.925 x 10
6
Hz
6.25 x 10
3
Hz
=
66548
=