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Summary of Contents for Timewave DSP-599zx
- Page 1 DSP-599zx Audio Noise Reduction Filter Operating Manual March 6, 1997...
- Page 2 Serial Number You will need your serial number when communicating with Timewave Technology, Inc. The number is on the bottom of the DSP-599zx. It is also stored within the unit and is displayed when you power up your unit. Record your serial number on your registration form and here for future reference.
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Page 3: What Is Packed With Your Dsp-599Zx
Consult your owner’s manuals. • External speaker and/or headphones. You will need at least one of these devices to connect to the DSP-599zx to hear the audio signal. The DSP- 599zx will accept either stereo or mono headphones with a 1/4” plug. - Page 4 Quick Start – “I don’t want to read the whole manual just to turn it on.” Typical Transceiver PTT Out Ext Sp See your Operator Manual for specific information about PTT output connections DSP-599zx Timewave Technology Inc. St. Paul, Minnesota USA. Audio Line Speaker Power Radio A Radio B Headphones...
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Page 5: Quick Start Setup
4. Connect a 12-16 Vdc 1 Ampere power supply to the DSP-599zx. Use a 5.5 x 2.1 mm power connector on DSP-599zx end of the 12-16 Vdc power cable. The center pin must be positive (+). (There is a 5.5 x 2.1 mm connector packed with the DSP-599zx manual.) - Page 6 Voice Mode Time Voice Data Test Setup Bypass Tone Mode Spkr/Chan Random DSP-599zx High Pass Rcl/Store Shift Function Center Freq 599-006 Typical display for Voice mode, 300 Hz to 2700 Hz filter, A channel active and speaker on. CW Mode Time...
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Page 7: Table Of Contents
“I don’t want to read the whole manual just to turn it on.” What is packed with your DSP-599zx .................iii What is not packed with your DSP-599zx that you will need ........iii Quick Start Setup ......................v Voice Mode ........................vi CW Mode ........................vi... - Page 8 Table of Contents Installation Power Supply .......................2-2 Connecting Cables .......................2-2 Wiring information ....................2-2 DSP-599zx Inputs and Outputs ................2-2 Transceiver Speaker Output ..................2-3 External Speaker ....................2-3 Multimode Data Converter and Terminal Units (TU) ..........2-3 Transceiver PTT and T-R Outputs ................2-3 Audio Input ........................2-4 Input Impedance Setup ....................2-4...
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Page 9: Voice Mode
DSP-599zx Audio Noise Reduction Filter Voice Mode Operation ........................4-1 High Pass/Low Pass Filters ..................4-1 Noise Reduction .......................4-2 AM Line Noise ......................4-3 Heterodyne Elimination/Notch Filters ..............4-4 Automatic Notch Filter ..................4-4 Manual Notch Filter ....................4-5 Voice Bypass ......................4-6 Setup - Voice ........................4-6 AM Line Noise ......................4-7... - Page 10 Table of Contents Configuring Data Operating Modes ..............6-12 Exit Setup .......................6-14 Test Instrument Operation Audio Millivoltmeter ....................7-1 Operation .........................7-2 Sine Wave Generator ....................7-3 Two-Tone Generator ....................7-4 CTCSS Decoder ......................7-5 Autodetect ........................7-5 Autodetect Display with Input CTCSS Tone............7-6 Tone Squelch ......................7-6 CTCSS Tone Squelch Selection ................7-6 CTCSS Tone Squelch Detection ................7-6 CTCSS Tone Squelch ...................7-7...
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Page 11: Introduction
Please turn to Section 2–Installation for detailed installation and Setup of your new unit. If you are in a hurry to start using the DSP-599zx, turn to sec- tion two after you have read the first four pages of this section. Return to this section to review all the features and capabilities. -
Page 12: Signal Flow
Front-panel selectable and adjustable inputs allow you to quickly setup and adjust your DSP-599zx to wipe out noise and QRM like never before! Here are a few more highlights among the many other operating features of the DSP-599zx: •... -
Page 13: Front Panel Controls
This switch is used alone or in combination with the 4. Voice, CW, Data, Test, and Setup LEDs. shift key to access specialized functions. Indicate the selected mode of the DSP-599zx. 13. High Pass/Center Freq Control 5. Spkr/Chan switch Tunes the high pass filter in the Voice mode. -
Page 14: Back Panel Connectors
1 – Introduction Back Panel Connectors Timewave Technology Inc. St. Paul, Minnesota USA. Power Audio Line Speaker Radio A Radio B RS-232 Headphones 12-16 Vdc Input Input Ouput Ouput 599-005 1. Power In 7. Audio Input A 12-16 Volts DC Use 5.5 mm/2.1 mm matching plug, Audio input from radio speaker output - channel A. -
Page 15: Features Common To All Modes
CW signals and heterodynes. Dual Channel Operation The DSP-599zx is a dual channel device with two sets of inputs and outputs. The DSP circuit completely processes the selected channel, while signals on the other channel pass through the DSP circuit without processing. Settings for each channel are retained when switching between channels. -
Page 16: Visible Memories
The DSP-599zx requires external speakers and/or headphones to hear the audio signal. The DSP-599zx will accept either stereo or mono headphones with a 1/4” plug. Stereo headphones are preferred over monaural head- phones so that you monitor both output channels simultaneously. -
Page 17: Bypass Control
In voice and CW modes, the bypass setting routes the signal through relay contacts to completely bypass the electronic circuitry of the DSP-599zx. Turning the power off to DSP-599zx uses the same relay bypass method. In data mode, the bypass route is through the DSP processor. The amount of signal delay through the bypass route is equal to the delay through the pro- cessed signal route. -
Page 18: Voice Mode
The DSP-599zx highpass filter adjustment range is from 100 to 1000 Hz and the lowpass range is from 1000 to 5000 Hz. Although the DSP-599zx has... -
Page 19: Adaptive Multi-Tone And Manual Notch Filtering (Tone Noise Reduction)
599-007 Bandpass Filters The DSP-599zx has a fully tunable bandpass filter for use in the CW mode. The LCD display shows the center frequency and bandwidth of the filter as the operator tunes with front panel controls. Narrow band signals like CW and RTTY require a bandpass filter with steep skirts and linear phase re- sponse. -
Page 20: Random Noise Reduction
CW Tone Pitch Shift A feature unique to the DSP-599zx is the ability to easily shift the CW tone pitch to another frequency. This feature works well with receivers that have non-adjustable, relatively high pitch CW tone, since most hams prefer to lis- ten to 400 - 600 Hz CW tones. -
Page 21: Data Mode
Center Freq 599-029 Bandpass Filters The DSP-599zx has both fixed and tunable bandpass filters for the data mode. Narrow band data signals like RTTY require a bandpass filter with steep skirts, linear phase response, and matched amplitude response. Linear phase response maximizes the usable signaling rate for a given bandwidth and minimizes ringing often heard on extremely sharp filters. -
Page 22: Data Tuning Function
This modem feature is designed for RTTY operation. It is not designed to be used as a TNC. RTTY Remodulator The DSP-599zx has another special data function for RTTY only. After passing through the optimized RTTY bandpass filter, a precision DSP-based FSK detector in the DSP-599zx demodulates the noisy incoming RTTY tones and uses the recovered digital data to drive a precision DSP-based AFSK generator. -
Page 23: Rtty Fsk Test Signals
DSP-599zx Audio Noise Reduction Filter 599zx. The precise clean tones from the RTTY AFSK remodulator can feed any analog multimode controller or TU via the DSP-599zx line audio output. Many analog RTTY demodulators have difficulty with noisy signals of varying amplitude, but virtually all of them can adequately demodulate the precise DSP AFSK generator output. -
Page 24: Audio Signal Generator
CTCSS tone received. The second is the tone squelch mode which detects a selected CTCSS tone and activates a switch output on the DSP-599zx as well as generates a tone on the selected CTCSS frequen- cy. The audio millivoltmeter function displays the peak amplitude of the se- lected incoming CTCSS tone. -
Page 25: Set-Up Mode
Bandwidth 599-054 Set-up Mode The DSP-599zx uses the setup mode to configure the features which typical- ly do not change while operating. • Install Setup. Common features are set before an operating session. Also features common to all modes such as input sensitivity and line output level are set during installation. - Page 26 1 – Introduction • Default CTCSS Tone • About Setup You can find the serial number of the unit and the revision level of the firmware along with the copyright notice in this section. 1-16 March 6, 1997...
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Page 27: Installation
March 6, 1997 DSP-599zx Audio Noise Reduction Filter Installation To install a DSP-599zx in a station, the operator must provide power to the DSP-599zx and make audio input and output connections to the DSP-599zx. A typical DSP-599zx installation is shown below. -
Page 28: Power Supply
2 – Installation Power Supply The DSP-599zx requires a power source of 12 to 16 Volts dc at 1.0 Am- pere. The center pin of the power connector is POSITIVE (+). The DSP- 599zx chassis is negative. The correct power plug size is 5.5 mm o.d. and 2.1 mm i.d. -
Page 29: Transceiver Speaker Output
DSP-599zx Audio Noise Reduction Filter phono plugs on one end to connect to the DSP-599zx. The connectors on the other end of the cables are determined by the other devices. Transceiver Speaker Output A 1/8” mono phone jack is usually available on most receivers and trans- ceivers for the speaker output. -
Page 30: Audio Input
Other radio output stages are stable with high or low impedance loads. When using a radio, start with the radio loudspeaker output connected to the DSP-599zx Channel A input. This should work for all radios. If you are using a high impedance source, start with the source connected to the DSP-599zx Channel B input. -
Page 31: Audio Input Signal Level Setup
• Line outputs Headphone Jack On the lower right hand corner of the DSP-599zx rear panel is a 1/4” (6.3 mm) jack connected for stereo headphones. Timewave recommends stereo headphones. Mono headphones will work for many of the functions of the DSP-599zx;... -
Page 32: Headphone Volume Jumper Access
High Volume Volume Volume (factory default) setting with mono headphones. Headphones Headphones Headphones 559-022 Reassemble the DSP-599zx by reversing the previous steps. Take care when sliding the circuit board assembly in not to pinch the attached ribbon cables. March 6, 1997... -
Page 33: Speaker Outputs
4 ohm speaker, or 1.0 watt into an 8 ohm speaker. Line Outputs The Line Output RCA phono jacks on the rear panel of the DSP-599zx pro- vides adequate output power to drive 600 ohm or greater loads. The front panel gain control does not adjust the audio level from these outputs. -
Page 34: Line Output
2 – Installation Timewave DSP 599zx Speaker A Channel A Headphones A Input Line Out A Channel B Line Out B Input Headphones B Speaker B Data DB-9 Connectors Connector 599-063 In this mode, you will hear the signal input on channel A on speaker/head- phone A. -
Page 35: Ptt Input
Proper connection of the DSP-599zx to the rigs Push to Talk circuit allows full function of the DSP-599zx. While in voice mode, the PTT circuit in the rig mutes the audio output of the DSP-599zx so audio feedback is not possi- ble. -
Page 36: Rtty Modem Input/Output
Some linear amplifiers have 115 volt supplies for their transmit-receive re- lays. If a transceiver PTT line is used to drive both the DSP-599zx and a linear amplifier, an isolation relay and/or isolation diode may be re- quired to prevent damage to the DSP-599zx (and any other solid state equipment connected to the PTT line). -
Page 37: Setup - Install
DSP-599zx. These usually do not have volume control. The range of adjust- ment is from +6.0 dBV to -16.5 dBV in 1.5 dBV steps. The factory default is -3 dBV. -
Page 38: Line Out Signal Level Setup
Time Voice Data Test Setup Bypass Tone Mode Spkr/Chan Random DSP-599zx High Pass Rcl/Store Function Shift Center Freq 599-075 1. Press [Shift+Mode] twice to enter Setup mode. ,QVWDOO 2. Rotate left knob until appears on the bottom line of the display 3. -
Page 39: Speaker/Headphone Routing
DSP-599zx Audio Noise Reduction Filter /LQH % 8. Rotate left knob until appears on the bottom left of the display 9. Press the left knob to select. 10. Rotate left knob until the chosen value appears on the bottom right of the display 11. -
Page 40: Alternate Channel Gain
Time Voice Data Test Setup Mode Bypass Tone Spkr/Chan Random DSP-599zx High Pass Rcl/Store Shift Function Center Freq 599-077 1. Press [Shift+Mode] twice to enter Setup mode. ,QVWDOO 2. Rotate left knob until appears on the bottom line of the dis- play 3. -
Page 41: Line Out Routing
DSP-599zx Audio Noise Reduction Filter Line Out Routing See page 2-8 for a discussion on the choices. Your choices are mono and dual. Time Voice Data Test Setup Mode Bypass Tone Spkr/Chan Random DSP-599zx High Pass Rcl/Store Shift Function Center Freq 599-079 1. -
Page 42: Reset Memory
Time Voice Data Test Setup Mode Bypass Tone Spkr/Chan Random DSP-599zx High Pass Rcl/Store Shift Function Center Freq 599-076 1. Press [Shift+Mode] twice to enter Setup mode. ,QVWDOO 2. Rotate left knob until appears on the bottom line of the dis- play 3. -
Page 43: General Operation
Front Panel Operation Three knobs, two with push buttons built in, and nine push-button keys on the front panel control the DSP-599zx. One knob controls power and sets the speaker and headphone output level of the DSP-599zx. The other two knobs, with their built-in push buttons, select the filter and test generator frequen- cies of the DSP-599zx. -
Page 44: Controls Common To All Modes And Features
The speaker output setting does not affect the headphone outputs or the line out- puts. Time Data Test Voice Setup Mode Bypass Tone Random Spkr/Chan DSP-599zx High Pass Rcl/Store Shift Function Center Freq 599-006 March 6, 1997... -
Page 45: Channel Control [Spkr/Chan]
DSP-599zx Audio Noise Reduction Filter Channel Control [Spkr/Chan] Press [Shift+Chan] to toggle between input channels A and B. The active channel is displayed immediately to the left of the speaker icon. An example: Channel A is connected to your HF rig and set for CW mode with a narrow bandpass filter. - Page 46 Data Test Setup Mode Bypass Tone Spkr/Chan Random DSP-599zx High Pass Rcl/Store Shift Function Center Freq 599-038 If you start to store or recall a setting from memory and decide not to com- plete the store or recall, pressing any other key (including [Store] or [Rcl]) before a number key is pressed cancels the Store or Recall operation.
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Page 47: User Selectable Power Up Mode
The AGC feature helps maintain a constant output level when the input level varies. The obvious use of the AGC feature is to keep the DSP-599zx output level when input signal levels vary rapidly as a result of operating conditions (for example, nets, contests, rapid fading). -
Page 48: Noise Reduction
599-034 Power Switch/Gain Adjust Control The gain knob on the front panel of the DSP-599zx is the power switch/gain adjust control. The gain control simultaneously controls both channels' vol- umes. Within Setup, you can adjust the relative volume of channel A with respect to channel B. -
Page 49: Operation
DSP-599zx Audio Noise Reduction Filter Voice Mode Operation In Voice mode, the DSP-599zx conditions the audio response of the DSP- 599zx using a combination of highpass filters and lowpass filters, adaptively reduces random noise, and adaptively eliminates multi-tone noise (hetero- dynes). -
Page 50: Noise Reduction
DSP-599zx random noise reduction mode. It is important to try different AGC, input attenuator and RF gain settings on your receiver in addition to the DSP-599zx. Fast AGC with 10 - 20 dB of input signal at- tenuation usually helps prevent the receiver front end from overload and the AGC from desensing the receiver. -
Page 51: Am Line Noise
• Pressing the left knob or pressing [Shift+Function] again stores the new value and returns the DSP-599zx to its normal operating mode with the AM Line Noise Filter activated. The noise reduction aggressiveness will remain at its last setting until it is changed. -
Page 52: Heterodyne Elimination/Notch Filters
4 – Voice Mode Heterodyne Elimination/Notch Filters The DSP-599zx has both an automatic and a manual tone notch filter to help remove interfering heterodynes, CW, and data signals. Automatic Notch Filter Time Voice Data Test Setup Mode Bypass Tone Spkr/Chan... -
Page 53: Manual Notch Filter
DSP-599zx Audio Noise Reduction Filter Manual Notch Filter The manually tuned notch filter is equally effective in reducing the interfer- ing signal levels, but may be used to eliminate a single heterodyne, CW or data signal. Time Voice Data Test... -
Page 54: Voice Bypass
599-061 Depressing [Bypass] places the DSP-599zx into a bypass mode. In this mode, a relay connects the audio input jacks of the DSP-599zx directly to the speaker, line, and headphone output jacks. The Bypass mode has prece- dence over the voice mode. When the DSP-599zx is in bypass, the settings of the all other controls do not affect the signal. -
Page 55: Am Line Noise
DSP-599zx Audio Noise Reduction Filter AM Line Noise To make the AM Line Noise filter most effective, you need to set it to the local power frequency. The selections are 50 Hz and 60 Hz. Time Voice Data Test Setup... - Page 56 4 – Voice Mode March 6, 1997...
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Page 57: Operation
QRM. The wider filters allow easy tuning and listening to multiple CW signals simultaneously. In the CW Bandpass mode, the DSP-599zx tailors the audio input using tun- able bandpass filtering, adaptive random noise reduction, and manual notch filtering. -
Page 58: Noise Reduction
CW Operating Hint The extremely narrow linear phase filters in the DSP-599zx will allow you to copy very weak and closely spaced CW signals. Use 10 to 100 Hz band- widths, but tune very slowly. Since many radios are difficult to tune slow- ly, use the bandpass center frequency control to help pick out the weak and closely spaced signals. -
Page 59: Cw Marker Tone
“lost” outside the passband of the filter. CW Tone Pitch Shift A feature unique to the DSP-599zx is the ability to easily shift the CW tone pitch to another frequency. This feature works well with receivers that have non-adjustable, relatively high pitch CW tone, since most hams prefer to lis- ten to 400 - 600 Hz CW tones. -
Page 60: Cw Bypass Mode
DSP-599zx directly to the speaker, line, and headphone output jacks. The Bypass mode has prece- dence over the CW mode. When the DSP-599zx is in bypass, the settings of the all other controls do not affect the signal. -
Page 61: Setup - Cw
DSP-599zx Audio Noise Reduction Filter Setup - CW There is one user adjustable variable within this mode of setup. 1. Press [Shift+Mode] twice to enter Setup mode. &: 2. Rotate left knob until appears on the bottom line of the display 3. - Page 62 5 – CW Mode March 6, 1997...
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Page 63: Introduction
The baud rate, center frequency and fre- quency shift of a data signal determine the bandwidth of filter for that data signal. In the Data Filter mode, the DSP-599zx has an array of band-pass fil- ters optimized for the most common high frequency (1.8-30 MHz) data modes. -
Page 64: Data Settings Display
• Turn the left knob to select appropriate data filter. • Press [Shift+Function] to turn the FSK(AFSK) tuning display on. • Tune in a FSK data signal on the receiver connected to the DSP-599zx. • Adjust the receiver frequency so that the Mark and Space bars on the display are approximately equal length. -
Page 65: Random Noise Reduction
• Bypass respects the status of the speaker switch. If the speaker is turned off, bypass leaves it off. The speaker will always, however, come on when power is turned off on the DSP-599zx. Turning off or removing power from the DSP-599zx automatically de-energizes the bypass relay and forces the DSP-599zx into the relay bypass mode. -
Page 66: Data Filter Mode
Normal operation for RTTY, AMTOR, SITOR, PacTOR and G-TOR uses a 2210 Hz center frequency filter in the USA. A 1360 Hz center frequency is common in Europe. The defaults used in your DSP-599zx can be chosen from within Setup - Install. -
Page 67: Hf Packet
[Shift+Tone] is pressed. Wideband Data Operating Hint The DSP-599zx can simulate almost any filter necessary for wideband data signals. If you know the upper and lower audio frequency limits of the sig- nal you are using, simply set the Highpass and Lowpass filters to pass those frequencies. -
Page 68: Rtty Modem Operation
• Turn the left knob to select one of the RTTY filters. • Press [Shift+Function] to turn the tuning display on. • Tune in a RTTY signal on the receiver connected to the DSP-599zx. • Adjust the receiver frequency so that the Mark and Space bars on the display are approximately equal length. -
Page 69: Rtty Remodulator Operation
The LED illuminated next to the [Function] button indicates the RTTY re- modulator is selected. The DSP-599zx filters and demodulates the received RTTY signal. Then The DSP-599zx generates a new set of RTTY tones that are modulated by the output of the RTTY demodulator. -
Page 70: Data Operating Hints
6 – Data Mode Data Operating Hints Data Primer RTTY, AMTOR, SITOR, PacTOR, G-TOR and HF Packet all use Frequen- cy Shift Keying (FSK). FSK is also called AFSK Audio Frequency Shift Keying when frequency shifted audio tones are used to modulate a transmit- ter. -
Page 71: Baud Rate
RTTY, AMTOR, and PacTOR mark-space center frequen- cies. The DSP-599zx mark-space center frequency factory setting is 2210 Hz for RTTY, AMTOR, G-TOR and PacTOR data modes. The DSP-599zx HF Packet mark-space center frequency factory setting is 1700 Hz. The mark- space center frequencies of the modem, receiver and DSP-599zx must match. -
Page 72: Setup - Data Mode
Voice Data Test Setup Bypass Tone Mode Spkr/Chan Random DSP-599zx High Pass Rcl/Store Shift Function Center Freq 599-070 Speaker Mute/Bypass You can adjust the transmit speaker volume of the data signal. This allows you to set the audio level of the transmitted signal from off the full volume when compared to incoming data signals. -
Page 73: Modem Assignment
DSP-599zx Audio Noise Reduction Filter Modem Assignment You can select which output channel will be used for the internal RTTY Mo- dem. This does not affect any other operating mode. You can select to send RTTY Modem signals to A, B, or A&B. You may also select to turn it off. -
Page 74: Configuring Data Operating Modes
Data Test Setup Mode Bypass Tone Spkr/Chan Random DSP-599zx High Pass Rcl/Store Shift Function Center Freq 599-090 The four configurable values are displayed across the bottom of the display. From the left, the first number is the mark frequency. The second is the shift frequency. - Page 75 DSP-599zx Audio Noise Reduction Filter The choices for frequency shift are 170, 200, 425, and 850 Hz. Baud rate choices are 45, 50, 57, 75, 100, 110, 150, 200, and 300 baud. Bandwidth is adjustable in 5 Hz steps through a range from 20 - 600 Hz.
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Page 76: Exit Setup
6 – Data Mode 11. Rotate left knob until your next function to change appears on the bot- tom line of the display or press the middle knob to return to main set- up menu. Exit Setup When you are through with Setup, press [Mode] to return to Voice mode. 6-14 March 6, 1997... -
Page 77: Test Instrument Operation
When used with the CTCSS function of the DSP-599zx, the audio millivoltmeter allows relative mea- surement of frequency deviation of CTCSS tones received UHF and VHF FM/PM signals. -
Page 78: Operation
• The selected channel input voltage is displayed in the lower left of the display in mVrms and as mVpk in the lower right corner of the display. The DSP-599zx can measure and display up to 2000mV. P9UPV • Press [Function] to select input signal amplitude units - P9SN •... -
Page 79: Sine Wave Generator
DSP-599zx Audio Noise Reduction Filter Sine Wave Generator This mode produces a tunable low-distortion, precision frequency sine wave test signal from 20 Hz to 10 kHz in 20 Hz steps. Output signal voltage is ad- justable from 5-50 mV in 1 mV steps and from 50-500 mV in 10 mV steps. -
Page 80: Two-Tone Generator
Time Voice Data Test Setup Mode Bypass Tone Spkr/Chan Random DSP-599zx High Pass Rcl/Store Shift Function Center Freq 599-049 • Press [Shift+Mode] to enter the Test Instrument mode. 7RQH • Turn the left knob to • Press left knob to select the two-tone generator. -
Page 81: Ctcss Decoder
CTCSS tones for UHF and VHF FM/PM transmitters. The tone squelch mode can detect a selected CTCSS tone and activate a switch output on DSP-599zx as well as generate a tone on the se- lected CTCSS frequency. Output signal voltage is adjustable from 5-50 mV in 1 mV steps and from 50-500 mV in 10 mV steps. -
Page 82: Autodetect Display With Input Ctcss Tone
• Press the left knob to enable CTCSS Tone feature. • Press [Tone] to turn generator on. • The DSP-599zx is now in the tone squelch mode. • The left knob selects the output and input CTCSS tone center frequency. -
Page 83: Ctcss Tone Squelch
Output Table CTCSS Tone Squelch The decoder has a detector that pulls a DSP-599zx output pin low when a signal exceeds the threshold. This output may be used to trigger a tape re- corder or other monitoring device. CTCSS Tone Squelch Switch Output Jack and Pin... -
Page 84: Ctcss Tone Frequencies - Hz
254.1 Checking CTCSS Tone Frequency and Deviation The DSP-599zx can help identify the CTCSS tone frequency of the incom- ing signal and the CTCSS tone relative frequency deviation with respect to other signals heard on the same receiver. To identify and measure a CTC- SS tone, use the CTCSS autodetect function to read the CTCSS frequency and amplitude on the LCD display. -
Page 85: Default Ctcss Tone
DSP-599zx Audio Noise Reduction Filter Default CTCSS Tone (Version 4 firmware only) You can adjust the default CTCSS tone that will appear when you turn the CTCSS test function on. Time Voice Data Test Setup Mode Bypass Tone Spkr/Chan Random... -
Page 86: Signal Generator Calibration
This unit was delivered to you calibrated. If for some reason you decide that you need to re-calibrate the outputs and inputs on the DSP-599zx, do it with great care. Resetting the unit has no effect on these settings. Use a high qual- ity digital multimode VOM meter, such as a Fluke 8060 or equivalent. -
Page 87: Millivoltmeter Calibration
DSP-599zx Audio Noise Reduction Filter 10. Press the left knob to select. 11. Rotate left knob until the reading on the meter reads 512 millivolts. 12. Press the left knob to select. Press middle knob to escape without sav- ing changes. -
Page 88: Exit Setup
7 – Test Instrument Operation tom line of the display or press the middle knob to return to main set- up menu. Exit Setup When you are through with Setup, press [Mode] to return to Voice mode. 7-12 March 6, 1997... -
Page 89: Troubleshooting
March 6, 1997 DSP-599zx Audio Noise Reduction Filter Troubleshooting Most of the functions of the DSP-599zx can be checked using the LCD dis- play, the LEDs, the internal sine wave generator and audio millivoltmeter and your ears. The most common problem with amateur radio equipment is defective or in- correctly connected cables. -
Page 90: Normal" Led Does Not Flash On Audio Peaks
2. Increase audio input level with receiver audio output level control until the "Normal" LED flashes. 3. Bypass the DSP-599zx by turning it off. Verify the audio level out of the radio by listening to the speaker. If nothing is heard, plug a set of stereo headphones into the rear panel headphone jack. -
Page 91: It Still Does Not Work
DSP-599zx Audio Noise Reduction Filter It still does not work! If the DSP-599zx does not seem to work correctly after carefully following the installation, operation and troubleshooting instructions in this manual, call, write, E-mail or FAX the Timewave Customer Service Department for additional help. - Page 92 8 – Troubleshooting March 6, 1997...
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Page 93: Specifications
March 6, 1997 DSP-599zx Audio Noise Reduction Filter Appendix A Specifications AUDIO INPUT A & B Impedance 20 K ohms or 25 ohms, jumper selectable input signal range for full 10 mV to 1.0 volt, front panel programmable output AUDIO OUTPUT A & B Speaker output power 1.0 watts into 8 ohms at 13.8 VDC, both output channels A &... - Page 94 Appendix A – Specifications RTTY MODEM Shifts 170, 200, 425, 850 Hz Data Rates 45, 50, 57, 75 Baud Input Audio from receiver. Output Open collector FSK and variable level AFSK Transmit Data Po- Normal or Reverse larity Receive data, Transmit data, PTT (RS-232 compatible) VOICE FILTERS Frequency Range Attenuation...
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Page 95: Glossary
Weather facsimile image format. There are two modes mode selected. When found, the circuit opens the cir- HF and satellite. The DSP-599zx currently supports cuit to allow data to flow through. only HF mode Detailed information on satellite mode... - Page 96 Appendix B – Glossary March 6, 1997...
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Page 97: Product Warranty
If Timewave receives notice of such defects during the warranty peri- od, Timewave shall, at its option, either repair or replace software media or firmware which do not execute their programming instructions due to such defects. - Page 98 Appendix C – Product Warranty March 6, 1997...
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Page 99: Electromagnetic Interference
DSP-599zx Audio Noise Reduction Filter Appendix D Electromagnetic Interference To maintain the integrity of the EMI prevention measures in this unit, it is important to replace all hardware if the unit is reassembled after opening the housing. This unit has been tested to verify compliance with EMI requirements of FCC rules part 15. - Page 100 Appendix D – Electromagnetic Interference March 6, 1997...
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Page 101: Schematic Diagrams
DSP-599zx Audio Noise Reduction Filter Appendix E Schematic Diagrams The schematic diagrams in this manual may differ slightly from any partic- ular DSP-599zx. Timewave reserves the right to make changes in the DSP- 599zx at any time. March 6, 1997... - Page 102 Appendix E – Schematic Diagrams A-10 March 6, 1997...
- Page 103 DSP-599zx Audio Noise Reduction Filter March 6, 1997 A-11...
- Page 104 Appendix E – Schematic Diagrams A-12 March 6, 1997...
- Page 105 DSP-599zx Audio Noise Reduction Filter March 6, 1997 A-13...
- Page 106 Appendix E – Schematic Diagrams A-14 March 6, 1997...
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