Zvei-1, Zvei-2 – Wavecom W61PC V7.5.0 User Manual

Page 249

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WAVECOM Decoder W61PC/LAN Manual V7.5

Transmission Modes

239

FULL FRAME. This is the general case in which header data as well as user data are displayed.

User data ar displayed in the text window and frame and packet headers are displayed in the sta-
tus lines as well as in the text window.

DATA ONLY. Frame and packet headers are displayed in the status lines. In the text window only

user data are displayed.

ZVEI-1

The entire call number is transmitted by consecutive tones in decade sequence. When two identical digits
are to be transmitted consecutively, then an eleventh frequency is used as a repetition identifier.

Parameter

Value

Frequency range

VHF/UHF

Operation modes

Analogue Selcal

Modulation

FM, SUB Tone

Receiver settings

FM, BW = 12 kHz

Input format(s)

AF, IF

If more than two identical digits are to be transmitted, the repetition tone is appended to the digit tone
(e.g. 22222 is transmitted as f2 fw f2 fw f2, where f2 is the tone for "2" and fw is the repetition tone).

In most systems the accuracy of the single frequencies has to be within +1/-1.5% of the nominal value.

For ZVEI modes having nominal tone durations of 70 ms, the duration of a single tone may vary ± 15 ms.

Decoding the selective calls is started by clicking on a system. If transmission and system selection con-
form, the call sign is displayed on the monitor. In the Options menu a Time stamp function can be ena-
bled to add date and time to each call.

Tone Allocation

Digit

Hz

Digit

Hz

0

2400

8

2000

1

1060

9

2200

2

1160

A

2800

3

1270

B

810

4

1400

C

970

5

1530

D

886

6

1670

E (REPETITION)

2600

7

1830

Tone duration: 70 ms

ZVEI-2

The entire call number is transmitted by consecutive tones in decade sequence. When two identical digits
are to be transmitted consecutively, then an eleventh frequency is used as a repetition identifier.

Parameter

Value

Frequency range

VHF/UHF

Operation modes

Analogue Selcal

Modulation

FM, SUB Tone

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