4.13 Change of Antenna Speed: RSB-096 and RSB-097
4-68
4.13.2 Change and adjustment of antenna speed
The PWR board of 42 rpm type is 03Pxxxxx-B and D types, and the PWR board of 24 rpm
type is 03Pxxxxx-A and C types.
When the Power SPEC is different from the Antenna motor SPEC, the desired antenna
speed cannot be achieved. For instance, if RSB-096 of 24 rpm type is used with the PWR
board of B and D types, the antenna motor power voltage becomes more than 30 V, which
can result in a damage of the antenna motor.
Change of SPEC
1. Make the setting of jumpers JP161 and 162
PWR board setting
PWR board
ANT speed
(rpm)
JP161 JP162
Gearbox
03PxxxxA, C 24 Open Open RSB-096
03PxxxxB, D 42/36 Short Short RSB-097
2. Make adjustments of the B.P frequency according to the antenna speed. Connect the
frequency counter to TP17 and make adjustments at R168.
Adjustment
PWR board
ANT speed
(rpm)
Adjusting
position
Check point Adjusting value
03PxxxxA, C 24 144 + 5 Hz
03PxxxxB, D 42/36
R168 TP17 (B.P)
252 + 5 Hz (42 rpm)
To make adjustments of 03PxxxxB and D (42/36 rpm)
Set [MENU] -> 0 -> 3 -> 4: ANT REVOLUTION] to “AUTO”.
The antenna speed automatically changes according to the transmission pulse length.
Adjust the pulse length to 252 Hz at S2. See page. 4-17.
- S1, S2 -> 252 Hz: 42 rpm (Motor voltage, Approximately 24 VDC)
- M/L -> 204 to 288 Hz: 34 to 38 rpm (Motor voltage, Approximately 20 VDC)
Fig. 4.13.2 Adjustment of Antenna Speed
SPU
p.b.c
PWR p.c.b
BP
ANT Speed
(Hi/Low)
BP
RSB-097
42/36rpm
ANT Motor power
(24V/20V)
RPU-013
(B/D type)
TP17
The antenna speed can be changed
by “ANT Speed” signals.
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