User's Manual

Page Center User Manual
Page 38
11. Send a 1200 bps test signal to the transmitter using Test Function 1. Adjust R34 for 4.0 kHz / 2 kHz (0 to
peak) deviation.
12. Unkey the unit.
13. Enable a 100 Hz CTCSS encoder on the transmit frequency.
14. Key the transmitter with the F3 key. Adjust R32 for +/-500 Hz deviation of the CTCSS tone.
15. Measure the transmitter's power level to verify that it is set to the desired level with the internal jumpers.
12.2.3 Telco Interface
1. Generate an RF carrier on the receive frequency, 1 kHz tone, 60% FSD = 3 kHz / 1.5 kHz. RF level 10 uV.
2. Connect the TELCO line to the RX audio by holding the 2 button down on power up to bring-up the test
mode, then press F1 and F2.
3. Adjust R69 (telco line level) for a level of –9 dBm on the line.
4. Disable the RX audio by pressing F2 twice more. Generate a DTMF tone from the PageCenter by pressing
3 and then F4.
5. Verify that the line level is between -15 and -12 dBm. Then press the DOWN arrow to turn off the DTMF.
6. Generate a –9 dBm 1000 Hz tone onto the TELCO line from an external test instrument. Alternatively,
press a key on a telephone connected to the phone interface.
7. Connect the TELCO to the transmitter by pressing F2 twice.
8. Measure the p-p waveform at TP10 on an oscilloscope. Adjust R52 so that the audio signal is just below
the clipping level.
12.2.4 Final Test
Once the unit is assembled and ready to ship, the following checks should be performed.
1. Program any customer-specific frequencies and databases into the unit.
2. Verify the LCD and keypad are working properly with Test Functions 5 and 6.
3. Verify the backlight on the LCD is on.
4. Verify the TX LED works when pressing F3.
5. Verify the busy LED comes on when a carrier is on the channel.
6. Key the transmitter with the F3 key, speak into the mic and verify the audio level is set correctly.
7. Verify that PORT1 and PORT2 can be used to send a page in the TAP manual mode.
8. Verify all 8 alarm inputs work using Test Function 7.
9. Verify that the Wide/narrow setting in the TX Setup menu is set to match the type of radio that is installed
in the unit.
10. Verify that a voice telephone call can be made from a two-way radio.
11. Send a numeric page from the keypad to a pager and verify that it is received and properly decoded by a
pager.