3] ref deviation, 4] ctcss deviation, 5] dcs deviation – Vertex Standard VX-2500V User Manual

Page 14: 6] ltr deviation, Alignment

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- [3] REF Deviation

This parameter is used to align the REF Deviation.

Press [Enter] on “[3] REF Deviation” to align REF

Deviation.

Select the Channel “1“ in alignment range.

Adjust the AF generator output level to

776mVrms(0dBm) at 300Hz to the pin 3 of the

J1502.

Press the [Space] key on the keyboard to acti-

vate the transmitter.

Press the [UP] or [DWN] key, as needed, to set

the modulation wave as follows.

Press [Enter] to lock in the new data.

Select the Channel “2,“ and set the modulation

wave, same as Channel “1.“

- [5] DCS Deviation

This parameter is used to align the DCS deviation.

Press [Enter] on “[5] DCS Deviation” to align

DCS Deviation.

Select the Channel “1“ in alignment range.

Press the [Space] key on the keyboard to acti-

vate the transmitter, and injects a DCS test tone.

Press the [UP] or [DWN] key, as needed, to set

the DCS deviation (Wide) to the following speci-

fication.

Press [Enter] to lock in the new data.

Select the Channel “2,“ and set the DCS devia-

tion (Narrow), same as Channel “1.“

DCS Deviation (Wide): 0.60 kHz (±0.1 kHz)

DCS Deviation (Narrow): 0.30 kHz (±0.1kHz)

The actual DCS deviation will increase around

20% based on the above alignment as follows,

Actual DCS Deviation (Wide): 0.70 kHz

Actual DCS Deviation (Narrow): 0.35 kHz

- [6] LTR Deviation

This parameter is used to align the LTR deviation.

Press [Enter] on “[6] LTR Deviation “ to align

LTR Deviation.

Select the Channel “1“ in alignment range.

Press the [Space] key on the keyboard to acti-

vate the transmitter, and injects a LTR test tone.

Press the [UP] or [DWN] key, as needed, to set

the LTR Deviation (Wide) to the following speci-

fication.

Press [Enter] to lock in the new data.

Select the Channel “2,“ and set the LTR devia-

tion (Narrow), same as Channel “1.“

LTR Deviation (Wide): 0.80 kHz (±0.1 kHz)

LTR Deviation (Narrow): 0.60 kHz (±0.1 kHz)

The actual LTR deviation will increase around

20% based on the above alignment as follows,

Actual LTR Deviation (Wide): 1.00 kHz

Actual LTR Deviation (Narrow): 0.70 kHz

Alignment

- [4] CTCSS Deviation

This parameter is used to align the CTCSS deviation.

Press [Enter] on “[4] CTCSS Deviation” to align

CTCSS Deviation.

Select the Channel “1“ in alignment range.

Press the [Space] on the keyboard to activate the

transmitter, and injects a CTCSS test tone.

Press the [UP]/[DWN] key, as need, to set the

CTCSS Deviation (Wide) to the following speci-

fication.

Press [Enter] to lock in the new data.

Select the Channel “2,“ and set the CTCSS De-

viation (Narrow), same as Channel “1.“

CTCSS Deviation (Wide): 0.70 kHz (±0.1 kHz)

CTCSS Deviation (Narrow): 0.35 kHz (±0.1 kHz)

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