8
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| Document ID | 79136 |
| Application ID | /x3daL+CM/sZNLlv2CEgDw== |
| Document Description | 8 |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 37.85kB (473094 bits) |
| Date Submitted | 2000-01-03 00:00:00 |
| Date Available | 1998-10-02 00:00:00 |
| Creation Date | 2001-05-04 01:56:39 |
| Producing Software | Acrobat Distiller 4.0 for Windows |
| Document Lastmod | 2001-05-04 01:56:53 |
| Document Title | 79136.pdf |
| Document Author: | VicodinES /CB /TNN |
21 07 "95 TIE 11:23 FAX li-l 3 3594532 RSD — DlZ\ELUPll\T anus
M8300) TESS/B37 Circuit Operation 0213
-_F
FCC ID: CASTEL -_
2.9 T837 Exciter Drive Amplifier- EXCITER, 2.983 (10)
(Refer to Figure 242 and the exciter circuit diagram (sheet 3) in Section 6.3.)
A two-stage, wide band amplifier (0365, 0370) pmvides an output level of approxi-
mately BOUmW (+29dBm) for an input of 170mW (+22dBm) from the VCO. IC330 pins
5, 6 8: 7, 0310, and Q315 provide a ‘lO.5V regulated supply for the exciter.
To reduce the spurious output level when the synthesise: is out-of—lock, the Tx-Reg. and
Lock-Detect signals are gated to inhibit the Exciter control circuit and to switch off the
RF signal at the input to the drive amplifier. This 15 achieved by a PIN switch attenuator
(0340, D350, D360).
Cyclic keying control is provided by additional circuitry consisting of several time
delay, ramp and gate stages:
' 03051630 pins 5, 6 6: 7 power ramping
- Q340, (2345 Tx—Reg, and Lock-Detect gate
' Q320, Q325, Q330, Q335 delay and PlN switch drive.
This is to allow the RF power circuits (both exciter and PA) to ramp up and down in a
controlled manner so that minimal adjacent channel interference is generated during
the transition.
R359, R360 and R362 form a 6dB attenuator to provide good VCO/ drive amplifier isola-
firm,
The output attenuator (R392, R390, R394, R396) assists in reducing exciter/PA interac-
tion while also muting a good match for Q370.
Note: The exciter provides a DC control signal to the PA via the RF coax. This is
injected via L390.
Copynght TEL 30/04/98
21/07 '95 TUE 14:24 FAX 64} 3 3594632 Rsp —_DE\'El_.U_l3!t_lNT mm;
Msaooo 7836/5117 Initial Tuning & Adjustment 03.5
-—
. _ FCC ID: CASTEL0006
3.4 ShortTumng Procedure EXCITER: 2.983 mus)
Use this procedure only if you want to reprogram the T836/837 to a frequency outside
the BMH: switching range and do not intend to carry out any other major adjustments
or repairs.
3.4.1 Introduction
Reprogram the operating frequency as described in the PGMGOOWin program—
ming kit (zefer to Section 3.2).
Remove the top cover (nearest the handle).
Set up the test equipment as described in Section 33.
Set the links in the audio processor section as required (refer to Section 3.5).
3.4.2 Syntheslser Allgnrnent
. Connect a high impedance voltmeter to PIA-1 or the junction of L1 5: R1 in the
VCO (this measures the synthesiser loop voltage).
- Key the transmitter by earthing the Tx—Key line.
- Single Channel Tune VCO trimmer CVl for a synthesiser loop voltage of
9V.
Multichannel Tune VCO trimmer CV 1 for a synthesiser loop voltage of
. 9V on the middle channel.
If there is no middle channel, tune CV 1 so that the chan-
nels are symmetrically placed around a loop voltage of 9V.
All channels should lie within the upper and lower limits
of 13V and 5V respectively.
Do not attempt to program channels with a greater fre-
quency separation than the specified switching range of
BMHz.
3.4.3 Output Power Adlustment (T 836 Only)
Connect an RF power meter to the output socket and key the transmitter.
Tum RV320 (power adjust) fully clockwise.
Tune CV451 (output power trim] for maximum output power and check that this
is >30W.
Adjust RV320 for the required output power (between 5 and 25W).
Readjust CV451 to reduce the supply current by up to 0.5A.
_____—_____—._._—_————
Cownght TEL sum/95
21/07 '95 TUE 14:21 FAX Si 3 3594632 RSD f DEVELUPllNT
03.6 TEN/637 Initial Tuning 5 Adjustment Mean-on
3.4.4 Two Point Modulation Adjustment
Note 1:
In this and following sections deviation settings are given first for wide
bandwidth sets, followed by settings in brazkets for mid bandwidth sets ( )
and narrow bandwidth sets [ ].
Nntez: Reference modulation and limiter adjustment are controlled by
PGMSDOWin. Electronic potentiometers (256 step) are used to allow chan-
nel-by~chan.nel adjustment of deviation and two point modulation.
Note 3: To optimise the modulation response across the switching range, repeat
Note:
3.4.5
Note:
steps 1-4 below for each channel that will be used (usually needed only for
data applications). in applications where the modulation response is less
critical (e.g. voice use only), carry out steps 1-4 below on the middle channel
and cut and paste the value to all other channds.
Inject an audio signal of GOOHZ 1.5V rrns (+5d8m) into the CTCSS input (Orange
1 (PLIOO) pin E).
Key the transmitter by earthing the Tx-Key line.
Adjust the output from the audio generator to obtain xSkI-lz (tZAkHz) [tLSkHz]
deviation at 600Hz.
Giange the input Frequency to lZOHz and adjust "reference modulation" via
PGMaOOWin to obtain =3kHz (zZAkHz) [zLSkHz] deviation (you can use either
the mouse or up and down arrow keys).
Change the input frequency back to SOOHz.
Repeat steps 2 and 3 above until the deviations achieved at the two input frequen-
cies are within 0.2dB of each other. You will need to do this at least four times.
Sweep the audio between 50 and 3001-12 for peaks.
A peak between 50 and 3001-11 will indicate a fault condition, i.e:
- incorrect set-up
or - modulation circuitry fault
The specification window is sldB relative to 150Hz From 65 to 2501114
FM Deviation (Limiter) Adjustment
If the Teas/537 will be used over the whole BMl-lz switching range, you
must set the deviation for each channel. However, if the module will be
used on frequencies that cover only a lMHa (or less) switching range, you
can set the deviation on the middle channel and use tlus value for all other
diannels with the "fill" option in PGMBUOWin.
Inject lkHz at -10dBm into the line input (D-range 1 (l’LlOO) pins 1 8: 4; pins 2 k 3
shorted; refer to Section 2.2 of Part F),
30/04/95 Copyright TEL
‘DDT
21/07 "98 TUE 14:25 FAX 64 3 3594532 RSD — DEVELOPHVT @008
Mason!) Teas/937 Initial Tuning 5 Adjustment 03.1
Adjust RVZlO (line sensitivity) fully clockwise and key the hansnu'tter by earthing
the Tx—Key line. Adjust ”deviation" via PGM8DOWin to set the peak deviation to
t4,7kHz (2348kHz) [flijz] (you can use either the mouse or up and down
arrow keys).
Sweep the audio frequency from lDOHz to 4kHz and ensure that the maximum
deviation does not exceed 4.7kHz (x3,8kHz) [2.3kH1]. Readjust "deviation" if
necessary via PGMSUDWin.
3.4.6 Llne-in Level Adjustment
Set the injected signal at the line input to the required line level (typically -10 to
-7.0dBm).
Adjust RVZIO (line sensitivity) to provide szHz (12.4kHz) [tLSkI-[z] deviation
Copyrigm TEL 30/04/95
_ FCC ID:
T830 Series iI Preliminary SENICE Manuai EXCKTER: 2 ' 983 (d) (8) 1
T830 Series |I
Base Station Equipment
Service Manual
Preliminary issue
August 1997
(Not For Resaie)
Auuust 1997
TBSU Series lI Preliminary Sen/ice Manual 3
About This Manual
Scope This manual contains preliminary servicing information on T830
Series ll 25W, 50W and 100W base stations which comprise the
following equipment:
25W base station T835 receiver
T836 25W transmitter
50W base station T8135 receiver
T837 exciter
T838 50W power amplifier
T835 receiver
T837 exciter
T839 100W power amplifier
100W base station
Contents Part A contains information on the following procedures:
- changing the operating frequency
' retuning the module after changing frequency
0 configuring the audio processor
° T838/839 user information
Parts B to G contain the following PCB information:
parts lists
grid reference indexes
PCB layout diagrams
test points & options diagrams
circuit diagrams
Part H contains the followmg information on the T800—2270000
rack frame:
general information
circuit operation
parts lists
I’CB layout diagrams
Technical Information
Any enquiries regarding this manual or the equipment it describes should be addressed
in the first instance to your nearest approved Tait Dealer or Service Centre. Further
technical assistance and copies of this manual may be obtained from the Customer Sup-
port Group, Radio lnfrastructure Division, Tait Electronics Ltd, Christchurch, New Zea-
land.
Date Of issue
TBSO Series II Preliminary Service Manual published August 1997
Changing the Operating Frequency of the T800 Seriesll
Overview
Introduction
Purpose of this
document
In this section
________—————
When you receive the T800 module it will be run up and working on a par—
ticular frequency. Sometimes you may want to change the operating fre-
quency. In some cases, when you change the operating frequency, it will
also be necessary to re-tune the radio to ensure correct operation.
__—__—————
It is the purpose of this document to familiarise you with the procedures
that must be carried out to check that the radio is still operating correctly,
and how to re»tune the radio when this is not the case.
_—______————
This section covers the following topics:
Topic See page
How to change the operating frequency 2
How to re-tune the T835 4
How to re—tune the T836/837 7
Configuring the Audio Processor 11
How to determine ifthe T835/836/837 is still operating 16
Changing the Operating Frequency of the T800 Series"
Example
A T830 receiver has been tuned opumally for 460MHZ. Therefore, it’s
switching range is 460-1.5MHz Io 460+1A5MHZ. Le, 458.5MHZ lo
46L5MHZ.
Changing the Operating Frequency of the T800 Series"
How to re-tune the T835 cont..
Steps involved The service manual has a section which describes a full Initial Tuning and
Adjustment procedure, This must be used if a repair has been made or
some other major characteristic has been changed If the only adjustment
made has been to switch to a channel outside the switching band, then the
following steps should be followed.
0 Change the operating frequency
- Lock the VCO
- Align the front end
' Set the noise mute
- Set the line output level
The procedure is described below,
__—__.—..—_—
Procedure Follow the steps below to retune the T835 if the frequency has been
changed and the radio stops operating.
Step Action
Lock the VCO
1 Connect a high impedance voltmeter to the long lead arm in the
VCO (this measures the synthesiser limp voltage.
2 Single channel
Tune vco trimmer C6 for a synthesiscr loop voimge of 10V
Multichannel
Tune VCO trimmer C6 for a synthesiser loop voltage of 10V on
the middle channel
ll" there is no middle channel. tune C6 so that the channels are
symmetrically placed around a loop voltage of 10V.
All channels should lie within the upper and lower limits of I6V
and IV respectively.
Do not attempt to programme channels With a greater frequency
separation than the specified switching range.
Changing the Operating Frequency of the T800 Series"
How to re-tune the T836/837
Equipment required You will need:
Computer with PGMSOOWin installed
TSOO programming kit
TSOO test & calibration unit
Digital multimeter
Oscilloscope (digital preferred)
Audio signal generator
Audio voltmeter x 2
RF power meter
Modulation meter
20dB pad
or
Computer With PGMSOOWin installed
T2300 programming kit
TSOO test & calibration unit
RF test set
Before you start - Remove the top cover of the module (the side closest to the handle).
' Set up the test equipment as shown below.
,,,,, quuiincy
ZNB Ded’ oxulur : Counter
none pad' transmitter
Lma up RF on: . “Mam“
sum ; """" H swim j ' ' ‘ Q Mata!
Audio . Transmitter
Generator 7 crass VP AF o/P
' moo rm'i Q Q
Q Cullbroflen
Audio die" L RF Power Aufllu Oscilloscope
Voltmstfir Mstur Voflmeter
Connection to computer
via PGMsoowm
- Set the jumpers in the audio section of the module as required (see sec-
tion “Configurring the Audio Processor”).
' Connect the computer to the module using the PGMBOOWin program-
ming kite
__—____—_——————-
Changing the Operating Frequency of the T800 Series"
Adjust the Output power (T856 only)
1 Connect an RF power meter to the output socket and key the trans-
mitter
2 Set power control RV32O fully clockwise
3 Adjust CV45] for maximum output power and check that this
exceeds 30W
4 Adjust power Cunlrol RV320 for required power output
5 Readjust CV451 to reduce the supply current by up to 0 5A
Set the dual point modulation (to maximise the modulation response).
Settings are first given for wtde band sets, followed in brackets by settings for
narrow band
[1
Multiple
channels
- To optimise the modulation response across the switching
band repeat steps 1-4 for each channel that will he used (usu—
ally only needed for data applications).
~ For usage where the modulation response is less critical (e.g_
voice use only) follow steps 14 on the middle channel and
then cut and paste the value for all other channels.
Inject an audio signal of 600Hc L5Vrms (+5dBm) into the
CTCSS input (Derange pin 8).
Key the transmitter.
Adjust the output from the audio generator to obtain +173kHz [’/-
1.5kHz] deviation at GDOHZ.
Change the ll’lplll frequency to 1201-11 and using PGMSOOWin,
adjust the “Reference modulation" (by using the mouse or up and
down arrow keys) to obtain */—3kH7 [*/-l.5kHz] deviation.
Change the input frequency back to 600Hz.
Repeat steps 2 and 3 above unlil the deviations achieved at the two
input frequeneies are Within 0,2dB of each other. This will need to
be done at least four time
Sweep the audio between 50 and 300141 for peaks, A peak indi-
cates a fault condition (incorrect setup or modulation circuitry
fault).
The specification Window is ’/-ldB relative to 150Hz from 65 to
260Hz.
Changing the Operating Frequency of the T8110 SeriesII
Configuring the Audio Processor
Introduction There are a number of links in the T835, 836 & T2337 that can be changed
to configure the audio processor in various ways. The linking options are
given below for each of the T830 modules followed by a block diagram of
the audio processor and link configurations,
T835 audio Use the table below to set up the audio processor as you require it.
processor links
General
Plug Link Function
PLZH) l - 2 de-emphnsised response
2 , 3 flat response
PLZZO ] - 2 flat response
2 , 3 de-emphasised response
PL23O ] - 2 audio input via audit) 2 pad
2 — 3 audio from internal CTCSS speech filler
3 , 4 audio input Via 1/0 pad P250
PL240 1 . z bypass high pass filter
2 » 3
or 300HL high pass filter in circuit
3 , 4
4 - 5 audio input via PL230 or 1/0 pad P250
PLZSO 1 2 noise mute
2 ~ 3 carrier mule
PL260 l - 2 Rx disable link
2 — 3 not connected
PL270 l - 2 relay link
2 » 3 not connected
Options should he selecled before alignment of the receiver is attempted.
Changing the Operating Frequency of the T800 Series"
Note:
1) Audio 2 is available Via D range connector PLlOO Pin7 via the link
resistor R160. PLIOO Pin7 is already assigned to serial com. but this
can be disabled by removing R808.
2) External CTCSS units can be connected in series with audio via Audio
1 and Audio 2.
ML refine/P
Alm|m2
mam-wri—
T835 Audio processor block dia-
gram showing link options
Configuring the Audio Processor cont..
Changing the Operating Frequency of the T800 Series”
T8361T837 audio
processor links cont.
ecu-r 1; v
4 M
carom 301—
fl-Kiy J M 11 E!“
5 £5” . T'A‘J w J [2&5 /
Mk: mm Hg;— _50 . u: n
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mmpm n E mm 7»
“u“- m ,um crass
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van
T836/837 Audio processor block
diagram showing link options
T838/839 User Information
Operating the power amplifiers
Introduction
Equipment
safeguards.
Important
The T838/839 power amplifiers are designed to operate at 50 Watts and
100 Watts respectively at ambient temperatures up to 60 degC. Operation
at higher power or higher temperature will result in decreased service life.
We have designed two safeguards into the equipment. Please read about
them below and note the warning when you install the equipment.
Maximum power clamp
This is to prevent over-dissipation in the power modules resulting in
excess temperature rise. The level is factory preset and should not need
field adjustment.
Warning: Should adjustment be necessary you must follow the proce-
dure outlined next to prevent damage to the module. Turn front panel
power control up full, adjust clamp potentiometer for 120W (T839) 60W
(T838) and readjust front panel power control for 100W (T839) 50W
(T838).
Multi ointtem rature s ns wertum down
In addition to the usual temperature sensor that controls the fan (T839),
the heat-sink temperature of each power module is also sensed. Should the
temperature rise excessively, by mis-adjustment or poor airflow. the output
power will automatically reduce until the temperature is reduced.
In all installations it important to ensure good airflow to ensure ambient
temperature does not exceed 60 degC on any units in the rack. Rack
mounted fans are recommended, particularly where several channels are
installed in one cabinet.
llll
Changing the Operating Frequency of the T800 Series II
How to determine if the T835/836/837 is still operating
Introduction If the radio was working fine and you want to check that it is still operat-
ing correctly, after changing the operating frequency, follow the steps
listed below.
Procedure Follow the steps below to perform a quick check of correct operation.
Step Action
1 Remove the top cover of the module (the side closest to the han-
dleJt
2 Connect a high impedance voltmeter to the long lead olen the
VCO (this measures the synthesiser loop voltage,
3 Ensure the measured DC voltage is between 5 & I5V
Note: If the T835 Receiver is not operating this will be indicated by a
slow flashing of the Green Supply light. This should be used as a visual
check followed by the more definitive check given above
Changing the Operating Frequency of the T800 Series II
Configuring the Audio Processor cont..
T836/T837 audio Use the table below to set up the audio processor as you require it.
processor links
General
Plug Link Function
PLZGS (A) l — 2 not connected
(B) 3 — 4 microphone preramp. output to compressor input
(C) 5 - 6 microphone pre-amp. output to multiplexer input
PL210 (L) l - 2 multiplexer output to pre-emphasis input
(M) 3 - 4 multiplexer output to limitcr input
(N) 5 - 6 multiplexer output to compressor input
PL215 (G) l - 2 not connected
(H) 3 , 4 compressor output to multiplexer input
(1) 5 — 6 compressor output to limiter input
(J) 7 - 8 compressor output to pre—emphasis input
(K) 9 - I0 not connected
PL220 (D) 1 - 2 pre-emphasis output to multiplexer input
(E) 3 - 4 pro-emphasis output to limiter input
(F) 5 - 6 not connected
Typical options
PL210 PL215
microphone prc-amp compressed
and pre»emphasised. (B) (L) (H)
3 - 4 1 - z 3 - 4
line input pre-cmphasised (slandv
ard set-up)
microphone pro—amp. compressed (B) (M) (I)
and tire-emphasised: — 3 » 7 - 3
line input unprocessed
line and microphone comprcstcd (C) (N) (J) (E)
and pre~emphasised - t » 7 - 8 3 4
microphone pro-amp compressed; (B) (M) (H) (F)
3- 7 - ~ 5 » 6
line and microphone flat response:
Changing the Operating Frequency of the T800 Series II
Configuring the Audio Processor cont..
T835 audio For CFCSS
processor links cont.. The audio processor links must be appropriately connected for the CTCSS
option used as shown in the table below.
CTCSS Option PL230 PL240 J
standards no CTCSS 2 - 3 Z - 3
received CTCSS tone + speech to line output 3 , 4 1 - 2
high pass filtered speech + internal CTCSS 2 , 3 4 — 5
detection
external CTCSS detection 1 — 2 4 — 5
The conditions stated in the above table are defined as follows:
standard, no CTCSS
- no CTCSS or other sub—audio signalling used
' audio bandwidth 3001-11 to 3kl-lz
- hum & noise -55dB
received CTCSS + speech to line output
- tone and speech transmitted down 600 ohm line
- audio bandwidth lOHz to 3kHz
' hum & noise -45dB
high pass filtered speech + internal CTCSS detection
- decoding performed in receiver
0 audio bandwidth 400Hz to 3kHz
o hum & noise -30dB with 250i3Hz tone present
external CTCSS
- decoding performed through the receiver (but externally) by T3I0-05
or similar
' speech injected back into receiver via “audio 2“ and sent down 600
ohm line
Changing the Operating Frequency of the T8110 Series II
Set the FM deviation (limiter adjustment)
Inject IkHz at -lOdBm into the line input (D—range pins 1 84 4:
pins 2 & 3 shorted).
Adjust RVZIO (line sensitivily) fully clockwtse and earth the key
line. Using PGMXOOWin, adjust the “Deviation" (by using the
mouse or up and down arrow keys) to set the peak deviation to
’/-4 7kHz l */-243kH1l
Sweep the audio frequency from 1001-12 to 4kH7 and ensure that
the maximum deviation does not exceed 4.7kHz [2,3kHz]. Re—
adjusi “Deviation" "necessary
N ole
- If the radio is to be used over the whole switching bandwidth
(SMHZ) the deviation should be set for each channel.
- It the frequencies to be switched over 15 less than lMHz then
the deviation can be set on the middle channel and this value
med for all other channels using the “fill” option in
PGMSOOWin,
Reset the line-in level
Set the injected signal at the line input to the required llnl: level
(typically -I() to -20dBm)4
Adjust RVZIO (line sensitivity to provide +l-3kHz [’/—l.5kHz]
deviation.
Changing the Operating Frequency of the T8011 Series II
How to re-tune the T836/837 cont..
Steps involved
Procedure
The service manual has a section which describes a full Initial Tuning and
Adjustment procedure. This must be used if a repair has been made or
some other major characteristic has been changed, If the only adjustment
made has been to switch to a channel outside the switching hand, then the
following steps should be followed.
~ Change the operating frequency
- Lock the VCO to produce the output frequency
- Adjust the output power
Set the dual point modulation
Set the FM deviation
- Reset the linefin level
The procedure is described below.
Follow the steps below to retune the T836 or T837 if the frequency has
been changed and the radio stops operating.
Step Action
Lock the VCO to produce the output frequency
1 Connect a high impedance voltmeter to the long lead (1le in the
VCO (this measures the synthesiser loop voltage
2 Single channel
Tune vco lnmmerC6 for a synthesiser loop voltage of IOV.
Multichannel
Tune VCO trimmer C6 tor a synthesrser loop voltage of NW on
the middle channel.
Ifthcre is no middle channel. tune C6 so that the channels are
symmetrically placed around a loop voltage of 10V
All channels should lie within the upper and lower limits of I6V
and IV respecttvely.
Do not attempt to programme channels wtth a greater frequency
separation than [he specified switching ranger
Changing the Operating Frequency of the T8110 Series I]
Align the front end
Seutngs are first gtven for wide band sets. followed in brackets by settings [or
narrow band
[ 1, For multichannel operation the receiver should be aligned on a
middle frequency.
Fre- 136-156MH2: With the power supply swttehed oil, solder bridge
quency links SL405. 410, 415, 430, 435, 440 and link B
range in the front end
148-174MH1: Solder bridge link A and ensure links SM05, 410<
415i 430, 435, 440 linkB are not cunneeted,
4.
1 inject a strong (in—channel RF signal with 3kHz deviation
[1.5kl-lz] at IkHz into the antenna socket and adjust L410, L420,
L460 & L470 (0 give best sinad,
Continually decrease the RF level to maintain 12dB SINAD.
51
MN
Readjust the from end doublets (L410, L420, L460 62 L470 to
give hesl sinad.
The receiver sensitivity should be better than -1 l7dBm, assuming
that the audio levels are mil betng overdrive“ (refer to Linc Ampli—
fier Output below).
Set the no
ise mute
Connect pins 1&2 of PLZSt) to enable the noise mute.
Set the RF level to -105dl3m wtth Sid-II deviation [1.5kHz] at
lkHz.
Set RV230 (gate sensitivity) fully anticlockwise.
Adjust RV330 to close the mute (it necessary tum oft“ the RF sig-
nal and then turn it on again).
Rotate RV330 anticlockwise until the mute Just opens.
l.
Adjust RV230 (gate benstllVlly} on the front panel far the required
opening stnad.
Set the line output level
1 Apply an (in-channel signal from the RF generatnr at a level of
770dBm thh 3kHZ deviation [1.5kHz] zit lkHz
2 Adjust lht: front panel line level pot. (RV210) to give an output of
+10dBm (in the 600 ohm line.
Set the line level to the required output level.
Changing the Operating Frequency of the T800 Series II
How to re-tune the T835
Equipment required
Before you start
You will need:
Computer with PGMSOOWin installed
TSOO programming kit
TSOO test & calibration unit
Digital multimeter
Audio signal generator
RF signal generator
Audio voltmeter
Sinad meter
or
Computer with PGMSOOWin installed
T800 programming kit
TSOO test & calibration unit
RF test set
0 Remove the top cover of the module (the side closest to the handle).
- Set up the test equipment as shown below,
Slnafl Andie
Meter Vottmeter
lo m
We 1
l—'—' RF in
i RF l
623g}; 4>Recmvar m, soon
External ‘
Modulation
- ' rebo’tesii’
were“ mum
Connection to computev
via PGMSCOWm
' Set the jumpers in the audio section of the module as required (see sec-
tion “Configuring the Audio Processor”)
- Connect the computer to the module using the PGMSOOWin program»
ming kit.
Changing the Operating Frequency of the T800 Series II
How to change the operating frequency
Description
After changing the
operating frequency
What is the
switching hand
There are two possible ways of changing the operating frequency:
Method 1 By using a computer running PGMBOOWin and
' Changing the default channel in the existing setup
or
- Reprogramming the radio channel frequencies and then select—
ing a default channel
NOTE: Please refer to the T2130 serwce manual and the PGMSOOWIN
programming manual for further lnslrucuon.
Method 2 By selecting a new channel using the or? switch on the rear nfthe
PCB Backplane or some other term nl'installed channel change
switch i.e. BCD. Internal DIP switch.
Having changed the operating frequency of the T830 there are two differ-
em scenarios you will be faced with:
' You Will change the frequency and the T830 will continue to operate
correctly. In this case you have changed to a frequency within the
switching band of the radio.
You will change the frequency and the T830 will not operate or will not
operate correctly. In this case you have changed to a frequency outside
of the switching band.
Note: The radio must now be re—tuned (see next section “How to re-
tune the T835" & “How to re-tune the T836/837”).
Because of the high RF performance of the T800 series there is a limit [0
the amount of frequencies that the radio can switch to before re-tuning
must occur. The limit is referred to as the switching bandwidth.
0 The T830 Rx can switch up to 3MHz,
0 The T830 Tx can switch up to SMHZ.
So if the T830 is optimally tuned to a centre frequency (which is often the
case when sent from the factory) then the Rx or Tx will be able to switch
half the switching band either Side of that frequency.
T830 Series Ii Preliminary Service Manual
Table Of Contents
Part
Using The Parts Lists
Title
In this manual there are separate parts lists for each product type, The table below
shows which lists to use for each product type.
To refer to the parts list for a . 4 .
T83XA1 0
use the following sections . . ,
T835 /T836/T837
D83X»10—001
XE83X-10—001
T838/T839
DBGX—l 0-0300
XE83X-10—0300
T83X—l3
D83X-13-00]
XESSX-lS—OO]
T83X»15
D83X715-001
XEBSX-lS-OOI
T83X-20
D83X-20-001
XE83X-20-00 1
D83X-20-0300
XEBSX-20-03OO
T83X-23
D83X-23—001
XE83X-23-001
T83X-25
D83X—25-001
XE83X-25-001
T83X—1X VCO
XE83XV10
T83X72X VCO
XEB3XVZO
T8130 Series II Prellmmary Service Manual
Head Office
New Zealand
Tait Electronics Ltd
558 Wairakei Road
PO. Box 1645
Christchurch
New Zealand
Phone, 54 3 358-3399
Fax 64 3 355-3636
Radio lntxastmclure Division
535 Wairakei Road
PO Box 1645
Christchurch
New Zealand
Phone: 64 3 3586399
Fax. (A 3 35&2825
Australia
Tait Electrunics (Ausl) Pty Ltd
275 Toombul Road
Northgate 4013
PO 13m 679
Virginia
Queensland 4014
Australia
Phone 61 7 3260—7799
Tull Free. 1800 0777112
Fax: 61 7 3260-7990
Canada
Tait Mnbile Radio Inc.
Unit 5, 158 Anderaun Avenue
Markham
Ontario LGEIA‘)
Canada
Phone 1 905 41724100
Tull Free' 1 8110 890-8248
Fax: 1 905 472-5300
France
Tait France Sarl
2 Avenue de la Cristallerie
92 316 Séi'res, Cedex
France
Phonez 33 1 41 14—05—50
Fax 33141 1-1-0555
Germany
Tait Mobilfunk GmbH
Willstatierslrafie 50
D~9D449 Numbcrg 60
Germany
Phone: 49 911 96 746-0
Fax: 49 911 96 746—79
Hong Kong
Tait Mobile Radm (HK) Ltd
Room 703A
New East Ocean Centre
9, Science Museum Road
Tsim Sha Tsui East
Hong Knng
Phone: 552 23693040
Fax 852 2369—3009
New Zealand
Tait Communications Ltd
Unit 4, 75 Blenheim Road
PO. Box 1185
Christchurch
Phone, 64 3 348—3301
Fax: 64 3 3430558
Singapore
Tait Electronics (Far East) Pte Ltd
4 bang Kee Road
SIS Building dos-11A
Singapore 159088
Phone. 65 471—2688
Fax: 65 479~7778
Taiwan
Tait Electronics (Taiwan) Ltd
1104, N0.142 Chung Hsiau E Rd
Sec, 4
Taipei
Taiwan
Phune 886 2 731—1290
Fax: 656 2 711-6351
Thailand
Tait Mobile Radio Ltd
14/1 Suwan Tower
Ground Floor
501 Saladaeng 1
North Sathom Road
Bangrak
Bangkok 10500
Thailand
Phone: 662 267-62902
Fax: 662 267-6293
United Kingdom
Tait Mobile Radio Ltd
Ermine Business Park
Ermine Road
Huntingdnn
Cambridgeshire PE13 6YA
United Kingdom
Phone: 44 14811-52255
Fax: 44 1480-411996
USA
Tait Electmnics (USA) Inc.
9434 Did Katy Road
Suite 110
Houston
Texas 77055
USA
Phone: 1 713 954-8684
Toll Free 1 800 222—1255
Fax: 1 713 463-6944
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