Patriot RITRON SST-442 Скачать руководство пользователя страница 13

OPERATION

SST-442

10

TROUBLESHOOTING

If you have trouble operating the handheld, review the
radio controls and operation sections.  If you think the
radio is malfunctioning, check the following table.

GENERAL                                                                

The radio does not work at all.

 

Make sure the battery is installed correctly, as
shown in FIG-1.

 

Recharge or replace the battery.  (See note 1.)

Operating features do not work exactly as expected.

 

The radio has been factory or dealer
programmed for customized operation.

Reception is poor.

 

Move to a different location.  (Note 2.)

 

Confirm that the proper antenna is connected to
the radio. (See p. 11, "Antenna.")

You cannot hear calls from other radios.

 

Turn off tone squelch.  (See Note 3.)

 

Be certain your radio receives on the same as
the caller transmits.  (Note 4.)

 

Recharge the battery. (Note 1.)

Your calls cannot be heard in other radios.

 

Make sure that your radio transmits on the
receive frequency of the radio(s) you want to call.
(Note 4.)

 

Recharge the battery.  (Note 1.)

TONE CODED SQUELCH                                          

You cannot screen out calls from users outside of
your tone group.

 

Make sure the channel is programmed with tone
squelch.

 Activate Tone (coded) squelch.  (Note 7.)

You cannot hear Tone coded messages while in
Tone (coded) squelch.

 

Confirm that the channel is programmed to
detect the same code as the calling radio(s)
transmits. (Note 7.)

Others in your tone group cannot hear your tone
coded messages.

 

Verify that you transmit the same code as the
radio(s) you call are programmed to detect.
(Note 7.)

ERROR TONES                                                          

An error tone sounds when the radio is first
turned on.

 

Replace the battery.  (Note 1.)

 

See "Error Tones" in the Operation section.

An error tone sounds while you are talking. (and
the transmitter shuts off).

 

Refer to “Error Tones”

BATTERY                                                                    

The battery loses its charge sooner than
expected.

 

Review the battery charging instructions.

 

Conserve the battery. (Note 5.)

 

If the radio is used in extreme cold, warm the
radio under your coat.  (Note 6.)

Notes

1.

Try a battery pack from a working radio.  If the radio in
question works with that pack, the original battery is
suspect.  Charge the suspect battery as recommended
in this manual.  Then, if the charged original battery
cannot power the handheld, try charging again with
another charger.  If the battery still doesn’t hold a
charge, the pack should probably be replaced.
However, if the battery appears to be good after you try
the second charger, the first charger might be faulty.  If
you think that an accessory is not operating properly,
contact your dealer or RITRON.  (Radio accessories
come with a 90-day limited warranty.)

2.

Reception can often be improved by moving a short
distance.  This effect is more noticeable inside of
buildings.  The range of these portables equipped with
a standard battery pack is about two miles (line-of-
sight).

3.

If your radio does not detect calls from other radios on
the channel, turn off tone squelch. (Press both Volume
buttons at the same time - a double beep means that
tone squelch is off.)

4.

If you want to hear a call, you must select a channel
that is programmed to receive the caller’s transmit
frequency.  If you want to call another unit, you must
select a channel that is programmed to transmit the
other radio’s receive frequency.  However, if you use a
repeater, your channel must be programmed to work
with the repeater’s transmit and receive frequencies.
(A radio channel can hold two separate operating
frequencies, one for Receive, the other for Transmit.)

5.

Maximum power drain occurs while the radio transmits,
so don’t hold down the Push-To-Talk button more than
necessary.  Battery power is used while the handheld is
left on to receive calls.  If practical, switch off the unit.

6.

In extreme cold, a battery’s charge capacity is greatly
reduced.  If you use the radio in very cold weather,
periodically warm the portable underneath your coat if
possible.  An optional remote speaker/microphone
would allow you to keep the radio under your coat while
transmitting and receiving.

7.

In order for radios to communicate using Quiet Call,
they must be programmed with the same tone code.
Each code is unique, and your radio will respond only
to the code programmed.  Press and hold both volume
buttons at the same time.  A single beep means that
tone squelch is on.  A double beep means that tone
squelch is off.

Содержание RITRON SST-442

Страница 1: ...ical standards of the applicable rule part s This includes but is not limited to the following items required under FCC Part 2 1033 c 2 FCC Identifier 3 A copy of the installation and operating instru...

Страница 2: ...D PROGRAMMABLE HANDHELD RADIO MAINTENANCE REPAIR OPERATING MANUAL FOR USE BY AUTHORIZED SERVICE MAINTENANCE PERSONNEL ONLY SST 442 MRM REV A COPYRIGHT 2001 RITRON INC ALL RIGHTS RESERVED RITRON JOBCOM...

Страница 3: ...g Frequency Table 13 Table 2 Quiet Call Codes and Frequencies 13 COMPUTER SOFTWARE COPYRIGHTS 13 PC COMPUTER PROGRAMMING 13 Programmable Features 14 Description of Features 15 TOPIC PAGE THEORY OF OPE...

Страница 4: ...ng iron for soldering CMOS circuitry 7 Lead straightening tools When straightening CMOS leads provide ground straps for the tool used PC Board Removal Special Tool RITRON recommends using a knurled nu...

Страница 5: ...et Also provides cable connection for PC programming Microphone PTT 2 5 mm for external Chg Jack speaker microphone headset or RITRON model BC A wall charger CONTROLS Push Button Controls On Volume Up...

Страница 6: ...earphone jack Receiving System Dual conversion superheterodyne I F System 1st 43 65 MHz 2nd 450 KHz L O Injection Low side QC DQC Decode Time per EIA Standards BATTERY Battery Pack 7 2 VDC 800 mAH rec...

Страница 7: ...propriate methods Safety Standards In 1991 the Institute of Electrical and Electronics Engineers IEEE and in 1992 the American National Standards Institute ANSI updated the 1982 ANSI standard for safe...

Страница 8: ...apacity PRECAUTIONS Use only RITRON supplied chargers other chargers might cause fire explosion or other damage to the radio Do not fast charge a brand new battery pack Otherwise the battery might be...

Страница 9: ...may never fully discharge the battery pack during normal use Achieve maximum battery life by fully discharging the battery periodically to condition it After exposing the battery pack to many cycles...

Страница 10: ...y Jack This jack connects speaker audio to optional accessories such as a remote speaker microphone or an earphone For accessories that have a two plug connector the smaller plug is inserted into the...

Страница 11: ...means that squelch is turned off Release the buttons To restore squelch press and hold both of the volume buttons until the radio sounds a beep or double beep Monitor To monitor the channel press one...

Страница 12: ...ort beep every minute to alert the user that the battery will soon need recharging Once the battery charge drops below the required operating voltage the radio emits a long low tone and turns itself o...

Страница 13: ...suspect Charge the suspect battery as recommended in this manual Then if the charged original battery cannot power the handheld try charging again with another charger If the battery still doesn t ho...

Страница 14: ...it a series of beeps pause and then begin another series Four series of beeps will be heard with each series representing a digit The number of beeps in a series is equal to the digit See CHANNEL READ...

Страница 15: ...rect digit Turn the radio off check the digits you are attempting to enter then start over again 4 If you make a PTT click error turn the radio off then on and start over 5 If the radio does not emit...

Страница 16: ...ter with Windows 95 or later The computer must have an RS 232 serial port and a minimum of 2MB available on the hard disk drive for installation COMPUTER SOFTWARE COPYRIGHTS The RITRON Inc products de...

Страница 17: ...xed beep volume or for a beep volume that is adjusted with the Volume controls If fixed beep volume is selected the fixed level can be set between 0 100 Busy Channel Transmit Inhibit This keeps the ra...

Страница 18: ...g radio beeps at the end of each received transmission Squelch Tightener This feature reduces distant co channel or other interference for channels that are not programmed with Quiet Call Carrier sque...

Страница 19: ...cycle time is programmable using the PC Programming Kit The 5V SW power strobe output at Pin 10 of IC301 controls Q306 which switches the regulated 5 VDC to the audio processing circuitry and the synt...

Страница 20: ...06E passes TX audio through to the VCO modulation input at R416 TX audio is applied to varactor CR403 to modulate the VCO TX audio is also routed to the Pin 1 input of TCVCXO reference oscillator Y302...

Страница 21: ...rcuit configuration with bilateral switches IC304A B and C permits the use of the same audio filtering system for both transmit and receive modes After R114 and C130 remove the 450 KHz element from th...

Страница 22: ...rogrammed to hold the transmitter on after the PTT switch has been released to allow tone related turn off codes for squelch tail elimination Power Amplifier Q203 Q204 and associated components amplif...

Страница 23: ...ncy of the VCO oscillator used in both transmit and receive The output is HIGH in transmit and LOW in receive T R output is also used to switch supply voltage to the transmit and receive circuits 12 C...

Страница 24: ...s test set to the BNC connector on the SST SRVBD test assembly 4 Turn on the radio to place it in operating mode 5 From the PC Programmer on screen menu select Tune Radio to display the Alignment scre...

Страница 25: ...nd Voice Only Narrow Band Voice Tone Wide Band or Voice Tone Narrow Band by pressing the desired option button 4 Press the Tune button on the Alignment screen to activate the transmitter 5 If adjustme...

Страница 26: ...performed by the factory selection of fixed capacitor C413 Do not attempt to adjust the synthesizer control unless a key component in the synthesizer has been replaced Key components do not include th...

Страница 27: ...5 0 5 0 CR305 1 GND GND GND Voltage clamp 2 5 0 5 0 5 0 3 0 0 0 0 0 0 CR306 1 2 4 2 4 2 4 Voltage clamp 2 NC NC NC 3 2 4 2 4 2 4 CR307 C 7 5 7 5 7 5 Reverse volt protection A 0 0 RX audio amp out CR4...

Страница 28: ...D GND GND 5 0 0 3 7 0 0 6 0 0 7 5 0 0 7 0 0 3 7 0 0 8 NC NC NC REF PIN TX RX SB DESCRIPTION IC308 1 2 4 2 4 Tone low pass filter 2 2 4 2 4 3 GND GND GND 4 5 0 5 0 5 2 4 2 4 6 2 4 2 4 7 5 0 5 0 8 3 2 3...

Страница 29: ...8 Battery V switching 2 7 5 7 5 7 5 3 7 5 7 5 7 5 Q 306 1 4 3 4 3 5 0 5V switching 2 5 0 5 0 5 0 3 5 0 5 0 Q 307 1 0 0 5 0 0 0 Audio amplifier enable 2 0 0 4 3 0 0 3 7 5 6 8 7 5 Q 308 1 7 5 6 8 7 5 A...

Страница 30: ...HIP CAP 350 1364 0 Bottom C126 15119104 1uF X7R 0805 25V CERAMIC CHIP CAP 441 1542 0 Bottom C127 15119104 1uF X7R 0805 25V CERAMIC CHIP CAP 61 2203 0 Bottom C128 15119104 1uF X7R 0805 25V CERAMIC CHIP...

Страница 31: ...AMIC CHIP CAP 82 2765 180 Bottom C335 15180101 100pF CAPACITOR CHIP 0402 COG 5 366 2880 270 Bottom C336 15181332 0033uF CAPACITOR CHIP 0402 X7R 5 10 454 3156 90 Bottom C337 152B6106 10uF 10V 3 4 X 2 8...

Страница 32: ...CHIP 0402 COG 5 1053 1576 180 Top C422 15110100 10PF NPO 0805 50V CHIP CAP 1119 1512 180 Top C423 151101A0 1 0PF NPO 0805 50V CHIP 1256 1400 0 Top C424 151108A2 8 2PF NPO 0805 50V CHIP 1187 1252 270 T...

Страница 33: ...03 18414104 4 5T AIRCOIL 24AWG 0625 ID RHH SMT 1478 2880 180 Top L204 18433102 2T AIRCOIL SMT 5 0nH 120 X 145 1591 3250 90 Top L205 18110103 CHIP INDUCTOR 10uhy 1386 3262 90 Top L206 18414108 8 5T AIR...

Страница 34: ...39K OHM RESISTOR CHIP 0402 1 16W 5 117 1676 90 Top R118 47180103 10K OHM RESISTOR CHIP 0402 1 16W 5 49 1509 0 Bottom R119 47180102 1K OHM RESISTOR CHIP 0402 1 16W 5 49 1470 180 Bottom R120 47180681 6...

Страница 35: ...tom R349 47180823 82K OHM RESISTOR CHIP 0402 1 16W 5 29 2146 0 Top R350 47180564 560K OHM RESISTOR CHIP 0402 1 16W 5 29 2198 0 Top R352 47100225 2 2M 0805 CHIP RESISTOR 44 2406 0 Top R353 47180103 10K...

Страница 36: ...6001029 28 AWG STRANDED WIRE BLUE INCHES 25105500 SHIELD SST PLUS SYNTHESIZER 25603000 FOAM MOUNTING SPEAKER SST 25603900 SPACER MIC FOAM SST 25605700 MICROPHONE HOLDER SST PLUS ANTENNA AFS 450 ANTENN...

Страница 37: ...NG SST MINI 14500025 OWNER S MANUAL 14x 44x SERIES JMX SST 14540006 WARRANTY REGISTRATION CARD JMX 442 MODELS ONLY CASE LABELS 14220002 LABEL CONTROLS JMX 14222035 LABEL NAMEPLATE JMX 14290002 BLANK L...

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