1

DSP-232+ Upgrade Kit A.06113

Revision 3

Installationand

OperationManual

2

TIMEWAVE TECHNOLOGY INC.LIMITED ONE YEAR WARRANTY

This warranty is extended only to the original purchaser of the A.06113.

If your A.06113 fails in normal use because of a defect in workmanship or materialswithin one year of the date of purchase, we will repair or replace (at our option)the equipment at our factory without charge to you. Timewave will pay for thereturn of the warranty-repaired unit to you.

First, double check your connections and operating procedure. If you're certainthat the unit is faulty, notify Timewave Customer Service immediately. IfTimewave is unable to resolve the problem by telephone or email, we will giveyou an RMA number and ask you to return the unit. You must pay all shippingand insurance charges for returning the unit to our factory.

We cannot be responsible for damage caused by accidents, abuse, misuse,improper installation, or unauthorized attempts to repair the unit. This warrantydoes not cover any parts of the DSP-232 except the A.06113.

Timewave service work performed in connection with this warranty is warrantedto be free from defects in materials and workmanship for 30 days from the dateof rerpair. All other terms of the limited warranty apply to the service warranty.

Contact Timewave Customer Service by telephone at (651) 489-5080 or by FAXat (651) 489-5066.

Mailing and shipping address:Timewave Technology Inc.1025 Selby Ave. St.Paul, MN 55104

email: sales@timewave.comtechsupport@timewave.comservice@timewave.com

web: www.timewave.com

TIMEWAVE MAKES NO OTHER WARRANTY, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TOTHE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

WARRANTY

WHO IS COVERED

WHAT WE WILL DO

WHAT YOU MUST DO

WHAT IS NOTCOVERED

SERVICE WARRANTY

HOW TO CONTACTTIMEWAVE

©2006, 2007 by Timewave Technology Inc., St. Paul, MN USA

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Table of Contents

Introduction

1. Upgrade Kit Installation

2. Upgrade Kit Connections

3. Upgrade Kit Operation

4. Upgrade Kit Schematic Diagrams

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Introduction

Thank you for purchasing the Upgrade kit for the DSP-232+. The Timewave partnumber of this kit is A.06113.

The kit contains a firmware upgrade that adds a sound card interface command, a Pactor1600/1400 Hz modem, enables the CW keying output, the Pactor mode, and the mail-box function for Pactor, AMTOR, and packet. Several minor bugs in the DSP-232 arefixed by this firmware release. With this upgrade, the DSP-232 will operate the Baudot,AMTOR, Pactor, Morse, 1200 baud packet and 9600 baud packet modes, as well assound card modes supported by your PC computer sound card.

The kit has two 128k x8 byte SRAM I.C. chips to increase the mailbox memory sizefrom approximately 18 kbytes to 242 KBytes.

The kit also contains the two circuit boards necessary for the the sound card interfaceand hardware CW keying output. A new DSP-232 housing top section accommodatesthe five new jacks added to the back panel of the the DSP-232.

The sound card interface adds transformer isolated I/O for sound card connections. Thenew Sound Card (SC) command switches the Radio 1 connections from the DSP-232internal modems to the PC sound card modems. New features on the sound cardinterface board are adjustable audio input and output levels, simultaneous DSP-232 andsound card reception/decoding and selectable sound card/DSP-232 TX audio datamixing or switching.

The CW keying ouput modification provides an output to operate a CW key input onmodern transceivers. An open collector transistor output pulls a positive voltage (100volts DC@ 100 mA. maximum) radio key input to ground when the DSP-232 sendsmorse code. An alternate connection is available for negative keying (-30 VDC @ 20mA. maximum).

The 10k resistor is a replacement for R31, currently 27K. Replacing this componentwill increase the sensitivity of your DSP-232.

The enclosed CD contains a demo copy of PK-Term for Windows. This is a 32-bitWindows 95 or later program the supports the DSP-232+. If you decide to purchasePK-Term for Windows, contact Creative Services Software at sales@cssincorp,com or(256) 381-6100.

Follow the instructions carefully and you should have no problem in getting the uniton the air. If you do have questions, Timewave has technical support available at (651)489-5080 and service@timewave.com.

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DSP-232+ Upgrade Kit

Section 1

DSP-232 Upgrade Kit Installation

Installation steps

Please check the contents of the kit at this time. You should have received:

1 Sound Card Interface/CW keying output upgrade assembly ( two boards connected bya ribbon cable)

3 Eprom I.C. ver. 1.0H (U4, U5, U33)2 128k x 8 SRAM I.C. (U6, U7)1 10k Ohm, 1/4 watt resistor1 DSP-232 top housing assembly2 Round knurled nuts for 3.5 mm jacks1 DSP-232+ Upgrade Installation and Operation instructions1 Warranty card1 Timewave CD ROM (also contains this document in .pdf format)

Here are the tools you will need:

Wire CuttersNeedle nose pliersPhillips ScrewdriverJeweler’s screwdriverFlat blade screwdriver3/16” hex nut driverSolder pencil and solderSolder sucker tool or solder wick for cleaning the pads on R31

Clear an area to work on your DSP-232+. You should take standard ellectro-static discharge (ESD)precautions when working on any ham equipment.

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Here are the steps in the upgrade procedure:

Disassembly

Keep all removed parts, some are necessary to re-assemble the DSP-232.

1. Remove all cables and power from the unit.

2. Remove the two 3/16 nuts from the DB-9 serial port interface.

3. Remove knurl nuts from receive jacks 1 and 2.

4. Remove the six screws from the sides and back of the DSP-232.

5. Remove the top cover of the DSP-232.

EPROM Installation

1. Position the unit with the face toward you. Locate U4 and U5 in the center of theboard.

2. Note the position of U4 and U5 in the socket (notch toward the front of the unit).The chip is inserted toward the back of the IC socket (Pins 1, 2, 31 and 32 arenot used).

3. Use a small flat blade screwdriver to remove U4. Be sure to insert the blade between the IC and the socket, NOT UNDER THE SOCKET.

4. Examine the pins on the new chip. Be sure the legs of the IC are not bent

5. Place the chip in the socket and seat. Examine the chip carefully to make sure thatthe legs of the IC are in the socket and are not bent and folded under the IC.

Repeat steps 3 through 5 for IC U5.

Repeat steps 3 through 5 for IC U33. Note the position of U33 in the socket (notchtoward the rear of the unit). This is the reverse of U4 and U5.

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Mailbox Memory Upgrade

Increasing the size of your mailboxYou purchased your DSP-232 with the standard 18K mailbox (32K RAM). You mayincrease the size of the mailbox in your DSP-232 by installing either one or twoadditional SRAM chips. If you install only one, you will have a 150K mailbox (160KRAM). If you install two chips, you will have a 242K mailbox (256K RAM).The firmware in your DSP-232 does not need to be changed. All that is necessary is toinstall the additional SRAM chip(s).

To install additional mailbox space do the following:

SRAM Installation

1. Position the unit with the face toward you. Locate U6 and U7 in the center of theboard.

2. NOTE the position of U6 and U7 in the socket (notch toward the front of theunit). The chip is inserted toward the back of the IC socket (Pins 1, 2, 31 and 32are not used).

3. Use a small flat blade screwdriver to remove U4. Be sure to insert the blade between the IC and the socket, NOT UNDER THE SOCKET.

4. Examine the pins on the new U6 chip. Be sure the legs of the IC are not bent

5. Place the chip in the socket and seat. Examine the chip carefully to make sure thatthe legs of the IC and not bent and folded under the IC and are in the socket.

Repeat steps 6 through 8 for IC U7. This completes the memory upgrade.

Sensitivity Resistor Installation

Next locate U23 (located 1” above the battery. U23 is parallel to front panel. R31 islocated next to the left-hand end of U23. It is currently a 27K resistor (Color codered, purple, orange and gold). Use a small soldering iron to remove and replace R31with the 10K resistor supplied with the upgrade kit. This completes the senstvityupgrade

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Sound Card Interface / CW Keying Board Installation

1. Remove the two black jumpers from the pins on the J5 Option Jack near the rightside of the DSP-232.

2. Slide the 15 pin SCI/CW board connector P1 on the 16 pins of J5 Option Jacknear the right side of the DSP-232. The components on the CW keying boardshould face the right edge of the DSP-232. Make sure all the pins fit into thecorresponding jacks on P1. The pin on J5 nearest to the front of the DSP-232should be not be inserted into the SCI/CW board connector P1. See Figure 1for orientation of the board.

3. Mount the SCI/CW keying jack in five round holes in the top of the back panelof the new DSP-232+ top housing assembly. Orient the jack board so that it willnot touch any components on the main PC board when the cover is in place.The jack board will be upside down when the cover is installed. See Figure 1 forcorrect orientation of the board.

4. Connect the ribbon cable as shown in the picture in Figure 1. Note theorientation of the ribbon cable and connectors. Position them exactly as shownin the picture.

5. You should only have two black jumpers remaining – they are not used. Tapethem to the inside cover of your manual in case you should decide to use themlater.

Re-assembly

1. Replace the cover and replace all screws and nuts removed in steps 2-4.

2. Reconnect the cables to the unit. Reset the unit and start operating!

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Section 2

Connecting the DSP-232+

2.1 CW keying Connections for the DSP-232

The 3.5mm phone plug from your radio’s keying input should have the tip con-nected to the CW keying line and the sleeve connected to ground. Plug the 3.5 mmplug from radio’s keying input into the CW Keying out (J11) - the jack nearest theDSP-232 power connector.

Your radio must be keyed by pulling the positive keying input line to ground.Contact Timewave if you wish to use you DSP-232 with an older transmitter withgrid-block keying.

2.2 Sound Card Interface Connections for the DSP-232

Carefully study the DSP-232+ Block Diagram (Figure 2) on the next page.

Connect the PC sound card inputs and outputs as shown on the block diagramusing the supplied 3.5 mm stereo audio cables.

The sound card output plug connects to the DSP-232 sound card output jack J9.

You may connect the your PC sound card loudspeaker plug to J12 on the DSP-232 output jack. This eliminates the need for a Y cable adaptor for the speaker.

The Sound Card input plug connects to the DSP-232 sound card input jack J10.

The Sound Card interface adds transformer-isolated I/O for sound card connections.The new Sound Card (SC) command switches the Radio 1 connections from the DSP-232 internal modems to the PC sound card modems. New features on the sound cardinterface board are adjustable audio input and output levels, simultaneous DSP-232 andsound card reception/decoding and selectable sound card/DSP-232 TX audio datamixing or switching.

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Computer

DSP-232

RadioTransceiver

DSP-232 CPU

DSP-232DSP

Modems

ComputerCPU

Serial -RS-232

PTT IN

AFSK IN

Radio 1Port

AFSK OUT

SystemBlock DiagramDSP-232+MultimodeController

TX AudioSwitch/Mix

Serial -RS-232

CW KeyInput

CW KeyingInterface

PTTInterface

CW KeyOutput

TXAudioInput

RXAudioOutput

Sound Card

Interface

XFMR

SoundCard

AudioInput

AudioOutput

In

Out

PTTOutput

XFMR

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Section 3

DSP-232 Upgrade Operation

The DSP-232 upgrade allows you to operate Pactor and use the mailbox feature forAMTOR, Pactor and packet. Follow the instructions in the DSP-232 operating manual tooperate in these modes. You will need a PC software program for the mode you wish touse. PK-Term for Windows fully supports the DSP-232. Download the latest demo copyof PK-Term for Windows from http://www.cssincorp.com. A copy is also on theTimewave CD for your convenience.

The Sound Card Interface adds transformer-isolated I/O for sound card connections.The new Sound Card (SC) command switches the Radio 1 connections from the DSP-232 internal modems to the PC sound card modems. New features on the sound cardinterface board are adjustable audio input and output levels, simultaneous DSP-232 andsound card reception/decoding and selectable sound card/DSP-232 TX audio data mixingor switching.

The CW Keying output feature added by the DSP-232 Upgrade requires no changes toyour operating procedure for CW. Follow the instructions in the DSP-232 operatingmanual to operate in this mode.

The input sensitivity added by the DSP-232 Upgrade requires no changes to your operat-ing procedures. The DSP-232 will require less input signal after the modification is in-stalled.

There are three level adjsutment trimpots on the DSP-232+ Sound card interface board.The functional names of trimpots are printed on the PC board near each trimpot.

“SC OUT” Sound Card Output level adjustmentIf the sound card output audio level is high enough to over-drive the DSP-232 input, usethis trimpot to lower the level.

“SC IN RX” Sound Card In level adjustmentThis trimpot adjusts the level from the DSP-232 output to the sound card input.

“RX AUDIO” Receive Audio Input level adjustmentThis trimpot adjusts the level from the radio audio output to the DSP-232 input.

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Section 4

DSP-232 CW Output Upgrade kit Schematic Diagrams

DRAWING NO:

A

B

D

C

A

B

C

D

6 5 4 3 2

DRAWN: DATED:

DATED:CHECKED:

QUALITY CONTROL: DATED:

DATED:RELEASED:

COMPANY:

TITLE:

1

DATE:

CODE: SIZE: REV:

LTR ECO NO: APPROVED:

REVISION RECORD

SHEET: OFSCALE:

Timewave Technology Inc.

DSP-232 Sound Card Interface / CW Keying Option Board

3

1 2

EDI C AP.40616

4/5/07D. Thon

+ KEY

- KEY

HIGH = key down KEY

OPT-OUT0

OPT-OUT1

OPT-OUT2

OPT-OUT3

R94.7K

R1068

R12

120

R11

470

R810K

R30

inf

R31

10K

R32inf

R410K

R5

inf

R6inf

R7

10K

13579

246810

JP1

HEADER 5X2

C610nF

C510nF

P1-1

P1-2

P1-3

P1-4

P1-5

P1-6

P1-7

P1-8

P1-9

P1-10

P1-11

P1-12

P1-13

P1-14

P1-15

P1-16

D2

S1GB

D1

S1GB

1

2

3

Q22N3904

1

2

3

Q3MPSA42

1

2 3

Q4

2N3906

+12V+5V

GND

GND

GND GND

GND GNDGND

TO_SC_OUTTO_SC_IN

SC_IN_GROUNDSC_OUT_GROUND

GND GND GND GND

GND AGND

+5V +5V +5V +5V

+5V+12V+5VA

RI

RO

TO

TI

OPTENB

DRAWING NO:

A

B

D

C

A

B

C

D

6 5 4 3 2

DRAWN: DATED:

DATED:CHECKED:

QUALITY CONTROL: DATED:

DATED:RELEASED:

COMPANY:

TITLE:

1

DATE:

CODE: SIZE: REV:

LTR ECO NO: APPROVED:

REVISION RECORD

SHEET: OFSCALE:

Timewave Technology Inc.

DSP-232 Sound Card Interface / CW Keying Option Board

3EDI C AP.40616

4/5/07D. Thon

2 2

Sound Card Audio Out Mix Sound Card Audio Out

Level Adjust

To Transmit

audio input

Sound Card/

Modem Select

From D/A output

From Rx output

To A/D Input

SC IN RX

RX Audio

R16

10K

R21

10K

R29

10K

R15

10K

R18

10K

R20

22

R23

10K

R24

22K

R14

10K

R19

10K

R1

10

R17

22

R28

10K

R22

10K

C71nF

C81nF

C18

100pF

C1110nF

C1610nF

1 2

J1 JUMPER1

1

2

10

15

U10-A

MM74HC4053MTC

67811

12

1314

16U10-B

MM74HC4053MTC

3

5

9

4

U10-CMM74HC4053MTC

1IN

2

GND

3BYP

4ADJ

5OUT

U4

LT1761ES5-BYP

-

+18 3

24

U8-A

MC34072

-

+

6

57

U8-B

MC34072

-

+ 1

53

4

2

U9

LMV796

+

C13

10uF

+

C15

10uF

+C1710uF

+C1410uF

+

C12

10uF

CW

1

2

3

R25

10K

CW

1

2

3

R27

500

CW

1

2

3

R26

500

1

2

3

4

5

6

T1

42TL016

600CT:600CT

1

2

3

4

5

6

T2

42TL016

600CT:600CT

AGND

+5VA

VREF

VREF

AGND

TO_SC_OUT

SC_OUT_GROUND

GND

+5VA

TO

OPTENB

TI

RI

VREF

RO

AGNDVREF

+5VA

TO_SC_IN

SC_IN_GROUND

AGND

+5VA VREF

AGND

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

- KEY

+ KEY

Title

Size Document Number R ev

Date: Sheet o f

<Doc> 0

DSP-232 SCI Jack Board

B

1 1Saturday, March 03, 2007

L5

L8

L9

C41 nF

R21k

C21 nF

C91 nF

L1

J11

CW Key Jack

L10

L3

L6

R31k

J12

Aux Input

D35.6V D4

5.6V

C191 nF

C101 nF

L2

J9

To Sound Card OUT

C211 nF

L4

JP2

HEADER 5X2

1 23 45 67 89 10

JP8

123

C201 nF

C31 nF

J13

To Sound Card OUT

J10

To Sound Card IN