Timewave DSP-599zx, Operating Manual

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7 – Test Instrument Operation
7-8 March 6, 1997
tended the frequency set to include more tones. Motorola calls their system
“Private Line," which is commonly shortened to “PL." GE calls their system
“Channel Guard."
Most new amateur VHF/UHF transceivers have built-in CTCSS encoders
with optional CTCSS decoders. Older transceivers often have neither an en-
coder nor a decoder.
CTCSS Tone Frequencies - Hz
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. If the 599zx displays a much lower or
higher CTCSS tone amplitude than a known good signal (or most other
signals on the same frequency), the CTCSS tone deviation of the received
signal is probably set incorrectly. Compare only CTCSS tones of the same
frequency unless you know the audio output frequency response of your
receiver is flat to less than 30 Hz into a 10K load impedance.
Setup - Test Instrument
There are eight user adjustable variables within this mode of setup.
1. Press [Shift+Mode] twice to enter Setup mode.
2. Rotate left knob until 7HVW appears on the bottom line of the display
3. Press the left knob to select.
67.0 94.8 131.8 171.3 203.5
69.3 97.4 136.5 173.8 206.5
71.9 100.0 141.3 177.3 210.7
74.4 103.5 146.2 179.9 218.1
77.0 107.2 151.4 183.5 225.7
79.7 110.9 156.7 186.2 229.1
82.5 114.8 159.8 189.9 233.6
85.4 118.8 162.2 192.8 241.8
88.5 123.0 165.5 196.6 250.3
91.5 127.3 167.9 199.5 254.1
Function
6
Shift
5
AGC
3
Bypass
Data
DSP-599zx
CW Voice
Mode
1
Random
4
Tone
2
599-071
Setup Test
Rcl/ Store
Spkr/ Chan
High Pass
Center Freq
Time