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AOR (UK) Ltd | |||
| Unit 9, Dimple Road Business Centre, Matlock, Derbyshire DE4 3JX, England Tel: +44 (0) 1629 581222 Fax: +44 (0) 1629 580070 |
| Reset |
| Fitting Optional Collins Filters |
| Scan Reset |
| Operating manual addendum - RS232 access etc |
There is a 'small' chance that the receiver will not power up correctly when switches on for the first time. This is due to the build up of a static charge during transit from the packaging etc. Should this occur, simply switch the set off, disconnect the power supply and leave for a few minutes.
Should you experience problems with the receiver "apparently doing something unexpected", simply switch off the receiver using the main power switch and leave for about 10 seconds. Switch the receiver back on again and check if the problem has been cleared.
If this does not appear to solve the problem disconnect all connections and peripherals such as tape recorders, weather facsimile printers, aerials and the power supply. Switch the receiver off and leave for one minute. Reconnect the power supply and test again.
Should the receiver still refuse to operate correctly, turn the set up-side-down and locate a small hole in the bottom cabinet close to the main rotary tuning control. This hole provides access to the microprocessor rest switch.
With the AR3030 connected to it's power supply and switched On, momentarily press this switch and release using preferably a non conductive thin probe such as a cocktail stick or cotton bud. This action will reset the microprocessor.
Should the receiver fail to power up, check the power supply and main fuse. The AR3030 does contain an internal DC power fuse but should it blow we suggest you contact your dealer for advise and service...there must be a reason for the fuse to blow!
An additional SOFTWARE reset a FULL RESET is available by depressing the [ENT] key (either of the mode keys on some production units) while switching the receiver ON. Hold in the [ENT] key while all the LCD segments appear and keep it depressed until the set returns to 10.000MHz, only then release the key, this will ensure a "full" reset. This may be useful should the standard reset not appear to fully reset the unit.
*Should the Collins filter be fitted and the receiver's microprocessor reset you must hold the [3] key while resetting via the bottom case rest switch. This action alters the carrier re-insertion point to optimise the SSB filters characteristics*
To limit marking of the case, we recommend placing the receiver onto a clean soft duster rather then directly onto a rubber bench mat. Ensure a "tight fitting" screw driver is used to limit marking to the black screw heads. Dont slip with the screwdriver!! All sets are quality control tested / cosmetically inspected before shipping, however it is advisable to confirm correct operation prior to disassembly.
All filter options:
a. Remove the bottom case. Ensure that the speaker connection
plug is "carefully" unplugged noting its position
and avoiding damage to the lead.
b. Remove the two screws securing the RS232 socket from the rear
panel.
c. Remove the 2 screws from the wire ANT terminal.
d. Place the set upside down with the front panel facing towards
you.
e. Carefully unplug the blue/white lead which emanates from the
rear case direction (about 7 oclock from the speaker
connector).
f. Carefully pull the coax cable from PCB ANT connector.
g. Remove (de-solder) the wire from BNC connector.
h. Gently lift the I.F. PCB upward in a folding motion from the
rear. The underside of the PCB is now acceptable for filter
fitment.
The choice of filter position is as follows:
CW filter only - Collins 526 8634 010 or 526 8693 010
Optional CW position.
SSB filter only - Collins 526 8635 010 or 526 8694 010
Originally it had been suggested that if no CW filter is fitted, the Collins SSB filter could be fitted to the CW OPTION PCB position to allow use of both the ceramic and Collins filters. In practice, the [NOR] [NRW] display flags cannot be selected in USB, LSB and FAX modes. The final production units require the Collins SSB filter to be fitted in place of the standard Murata filter... the operating manual is incorrect on this subject.
Remember: The SSB Collins filter option "must" be fitted in place of the standard ceramic Murata filter rather than in the CW option position.
CW & SSB filters at the same time -
Fit the Collins CW filter in the optional position and Collins SSB filter in place of the ceramic SSB filter.
Wider AM filter - Collins standard 526 8636 010 or 526 8695 010 (option 526 8561 020)
It is theoretically possible to fit a wider Collins 8.5kHz/-3dB AM filter (special order) in place of the 6kHz filter. There should be little call for this wide filter option and it is not largely referred to.
Install the filter(s) in an appropriate position followed by adjustment of the coils:
Note: Do not adjust the coils unrelated to the filter(s) installed.
CW filter
For CW filter installation the following simplified method is adequate. Ultimately use of sweep generator and oscilloscope is desirable.
1. Solder the Collins CW filter into the optional position.
2. The switching resistor of 560 OHMS may not be fitted to the
I.F. PCB just in front of the filter. If it is not fitted solder
an appropriate resistor in place.
3. Fit the I.F. PCB back into place but do not re-fit the case at
this time.
4. Switch the receiver to CW mode (the BFO engages automatically)
and select the narrow filter bandwidth.
5. Inject an unmodulated signal from a signal generator into the
aerial socket.
6. While receiving a signal at S-3 level rotate the coils on
either side of the filter (in line with it!) until the S-meter
deflects to the maximum point. "Carefully" rotate the
coils as the S-meter reading will only change gradually.
SSB filter
In case of the SSB filter installation using the simplified method is unable to remove PASS-BAND ripple. Use of a spectrum analyser and tracking generator or sweep generator and oscilloscope is required to achieve accurate adjustments.
It is desirable to change the BFO heterodyne crystals if the Collins SSB filter is installed. The replacement USB crystal frequency is 456.55kHz and LSB 453.45kHz. July 2003, optional heterodyne crystals are no-longer available for the Collins SSB MF2.5 filter.
| Receive mode | original crystal | Collins filter crystal |
| USB | 456.4kHz | 456.55kHz |
| LSB | 453.6kHz | 453.45kHz |
1. Remove the standard fitted Murata ceramic SSB filter and
install the Collins SSB filter into the SSB position.
2. Fit the I.F. PCB back into place but do not re-fit the case at
this time.
3. Switch the receiver to SSB.
4. Inject an unmodulated signal from a signal generator into the
aerial socket.
5. Use the spectrum analyser and tracking generator or
sweep generator and oscilloscope to optimise the results.
6. Select the appropriate re-insertion points by pressing and
holding the [3] key and pressing the RESET switch simultaneously.
Release RESET SW followed by releasing [3] key to complete the
frequency adjustment procedure.
1. Fill each memory with a frequency, it can be the same
frequency so doesn't actually take too long, start at 00 and fill
to 99 then re-fill 00 again.
2. Press [SCAN] [ATT] [0] [0] [.] [9] [9] [ENT]
That's it... Press [VFO] [SCAN] to start scan.
3. To clear all memory channels and reset unit press and hold
[ENT] while powering the unit, do not release [ENT] key until
10.000 MHz is displayed on LCD.
If you have a Collins filter fitted, refer to the fitting sheet
for initialisation key sequence.
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LTD 1996 - 2008. All other trade marks and names acknowledged. E&OE
Tel: +44 (0) 1629 581222 Fax: +44 (0) 1629 580070
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