TECHNISONIC INDUSTRIES LIMITED
TDFM-9300 Installation Instructions
TiL 13RE471 Rev. D Issue 5
22
2.23
POST INSTALLATION ADJUSTMENT
In most cases, factory audio settings will work; however, if there is a need to adjust audio levels
to match the audio controller system, then they can be adjusted in the Maintenance Menu. To
reach the Maintenance Menu, press FUNC – NEXT and select Configuration from the 2
nd
side
button. Then press the MODE key.
First Page – TX Mic Gains
Mic 1 Level:
24
The Mic gain levels can be adjusted from 0 to 40 with a typical factory setting of 22 to 24 (Band 5
is 20). The higher the number, the more sensitive the mic input is. The factory setting gives
approximately 1.5 kHz deviation for – 13 dBm for a 600 ohm system. Highlight the desired band
by pressing the corresponding side button. Key the selected band and rotate the knob to adjust
the mic gain to a desired level. Unkey the radio. Repeat for the other bands as required.
Press NEXT to reach the next screen.
Second page - RX audio levels.
RX Audio 1 level: 14
This page sets the MAX RX audio level the volume has when set to 40 on the normal operational
display screen. The maximum RX audio level on each module installed can be adjusted from 0 to
40 with a typical factory setting for bands 1 to 4 of 10 to 14 for 5 Vrms for 600 ohm load. Band 5
is 30 to 35. The higher the number, the higher the max audio is.
Highlight the desired band by pressing the corresponding side button. Rotate the knob to adjust
the Maximum RX level. Repeat for other bands as required.
Note: The factory level is optimized for highest level with the lowest distortion. Adjusting further
than factory settings will result in little gain and higher RX distortion. Normally this level should
only be lowered if the audio controller needs a lower level of drive.
Press NEXT to reach the next screen.
Third Page – Keypad Backlight Calibration
Keypad Calibration – 28 V
DC
; 1800
Keypad Calibration – 5 V
AC
: 400
The keypad backlight maximum brightness can be adjusted here. The two menus available are
28V and 5V. The active menu depends on the Backlight Mode selected in the Configuration
Menu. The 28V menu can be adjusted if the radio is set for 28V, or the 5V menu can be adjusted
if the radio is set for 5V.
The 28V menu is adjustable from 500 to 2500 and the 5V is adjustable from 100 to 1000.
The calibration value determines the maximum brightness the keypad will be allowed to go to
when the max back light voltage is applied the back light buss input. The
higher
the number, the
lower
the brightness. This feature maybe useful for matching the NV backlighting of the TDFM-
9300 to the airframe installation setup.
In the Configuration Menu, select the Backlight Mode – 28 V
DC
or 5 V
AC
(5
th
item). Set the
dimming bus in the airframe to maximum value. Rotate the knob to adjust the max brightness of
the keypad to the desired level.
Содержание TDFM-9300
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