Vertex Standard VXR-7000 Service Manual

30 VXR-7000 UHF Service Manual
Alignment
RX Unit Alignment Points
Receiver
PLL VCV (Varactor Control Voltage) Check
 Connect the DC voltmeter between the VCV check
point (on the RX Unit) and chassis ground.
 Select the Low band edge channel, and confirm that
the DC voltmeter reading is 1.6 ± 0.3 VDC (TYP D)
or 1.3 ± 0.3 VDC (TYP A) or 1.0 ~ 1.9 VDC (TYP
BS1).
 Select the High band edge channel, and confirm that
the DC voltmeter reading is 4.5 ± 0.5 VDC (TYP D)
or 4.3 ± 0.5 VDC (TYP A) or 3.3 ~ 4.8 VDC (TYP
BS1).
PLL Reference Frequency Adjustment
 Connect the Frequency counter to J3001 on the RX
Unit.
 Select the Center channel, adjust TC3001 (on the
RX Unit), if necessary, so that the frequency counter
reading is within ±100 Hz of the programmed Cen-
ter channel frequency.
Receiver parameters (excluding PLL)
 The following receiver parameters can be adjusted
from the computer by utilizing the CE27 Channel/
Alignment Program. Refer to the onboard help of the
CE27 Channel/Alignment Program for details.
RX Parameters Data
Squelch Threshold Level 0 (00h) ~ 255 (FFh)
Squelch W/N Level 0 (00h) ~ 255 (FFh)
RSSI Threshold Level 0 (00h) ~ 255 (FFh)
RX Tune Level 0 (00h) ~ 255 (FFh)
VCV Check Point
J3001
TC3001

Vertex Standard VXR-7000 Specifications

General

Brand	Vertex Standard
Model	VXR-7000
Category	Repeater
Language	English