CES SUPPORT 407-679-9440
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MAN71© CES 2010
2.8 Internal Adjustments
Internal COR Mobile Detector (R55)
(not required if External COR is used)
(1) Apply power to the 4700VP and the base station or repeater.
(2)
Rotate R55 clockwise until “COR” led DS5 illuminates. Rotate R55 counter clockwise until led DS5 extinguishes.
(3) Generate carrier to the base station or repeater and verify that DS5 illuminates when carrier is present and extinguishes
when carrier is removed.
DTMF RX (R51)
(1) Send a DTMF tone from the mobile and rotate R51 clockwise until the DTMF LED (DS4) illuminates. Press all the keys
on the DTMF mic or encoder and verify that DS4 illuminates every time each key is pressed. Send the connect and
disconnect code and verify that the mobile can access the 4700VP reliably.
Receive Audio (R50)
(1) Call the 4700VP telephone line from another telephone or mobile.
(2) Manually answer the line by pressing the connect switch on the front panel.
(3) Have the mobile make a test transmission. Using an AC voltmeter or scope monitor TP1 and set R50 to approximately
500mV (-4 dBm) on voice peaks from the mobile. If the levels cannot be reached, install JP6.
Transmit Audio (R43)
(1) Set the service monitor to receive on the transmitter frequency.
(2) With the telephone line plugged into connector J1, press the front panel switch to manually connect. A dial tone will be
transmitted.
(3) Adjust R43 to 4.0 kHz deviation as observed on the service monitor. Modulation should not be clipped or distorted. If level
cannot be reached or the range is inadequate, install JP4.
(4) Press the front panel switch to disconnect the telephone line.
Repeat Audio (R52)
(1) Set up the monitor in the Duplex mode (simultaneous receive and carrier generation) on the
respective repeater. Modulate a 1000 Hz tone at 4.0 kHz deviation on the receive frequency and adjust
R52 to deviation as monitored in the transmit frequency.
VOX (R42)
(1) Program the 4700VP for Simplex Smart Sampling, i.e. 50# 2#.
(2) Call the 4700VP telephone line from the mobile. While speaking adjust R42 until DS2 illuminates (illuminates only when
audio is present on the telephone line and extinguish when no audio is present and the Vox hang-time has expired.
Regenerated DTMF -Phone Tone (R53)
(1) Send the connect code and release PTT. Wait for dial tone, press and hold a DTMF tone and adjust
R53 to 500 mVpp at TP1
Ring-out and Beeps - Radio Tone (R54)
(1) Set up the service monitor to receive the transmitter frequency.
(2) Call the 4700VP telephone line from another telephone.
(3) Adjust the radio tone R54 to 4.0 kHz as monitored in the transmitter frequency.
