background image

Assemble these parts into one unit according to the fol-

lowing procedure and as shown in Figure 1 - M-PD Operat-
ing Controls and Accessories.

1.

Screw the antenna        or the RF test connector
In its receptacle.  A clockwise turn will insert the
antenna or RF test connector, while a counter
clockwise turn will remove them.

2.

Slide the battery pack along the bottom of the M-
PD main unit from the arrow-marked direction,
shown in Figure 1, until the battery pack locks into
place.

Operating Procedure (Refer to Figure 1)

To Receive a Message:

1.

Slide the Power switch       on the side of the battery
pack up to turn on the radio.

2.

Select a desired channel within a selected mode by
pressing the 

 mark side or 

 mark side, of the

CHAN switch 6 while watching the indicaion in the
display window.

An operating channel may also be selected by
pressing the CHAN key on the front keypad.
Pressing this CHAN key displays the current oper-
ating channel.  To select a different channel, key in
the channel number, then press the CHAN key.
The display will indicate the new channel name or
number and update the display flags.

An operating mode may be selected by pressing the
MODE key, also located on the front keypad.
Pressing the MODE key displays the current mode.
To select a different mode, key in the desired mode
number, then press the MODE key.  The new mode
will be displayed.

3.

To monitor the channel for idle or busy, watch for
the "BSY" symbol to be illuminated in the display
or audibly monitor the channel by simultaneously
depressing both the 

 and 

 volume buttons.

4.

Adjust the audio volume to the desired level by
pressing the 

 mark side (to turn the volume up) or

the 

 mark side (to turn the volume down) of the

VOL switch       .  As the VOL switch is operated,
the indication in the display window changes 1
through 31 (about 45 dB).  The volume level cannot
be set lower than the level programmed in the mini-
mum volume option.

To Send a Message:

Hold the radio so that the antenna is vertical.  Then, press

the Push-to-Talk (PTT) bar        on the left side of the main
unit an speak directly into the microphone in a clear and dis-
tinctive voice.  Always release the PTT bar as soon as you
stop talking.

Upon pressing the PTT bar, an indication will appear in

the display window        .

To Make a Telephone Call:

You can make a telephone call by direct entry through

the DTMF keypad or through the Recall Telephone Num-
ber
 feature.

1.

Turn the radio on, adjust the audio level and select
the desired operating channel as covered in TO
RECEIVE A MESSAGE
.

Either the antenna or the RF connector should
be connected to the M-PD radio main unit, as
desired.  If the RF connector is inserted in the
receptacle, located in the side of the unit, the an-
tenna connector circuit will become open.

NOTE

Display

If BSY If BSY lights, it
means that the channel
is busy.

Lights while you are
speaking.

Lights for high power.

The M-PD unit is provided with an optional timer
which inhibits continuous transmission beyond
about 12O seconds.  When transmission is inter-
rupted due to "time-out", you can resume transmis-
sion by releasing and then pressing the PTT bar
again.

NOTE

Figure 1 - M-PD Operating Controls and Accessories

LBI-31629

4

Содержание M-PD

Страница 1: ...LBI 31677 ericssonz Maintenance Manual M PD SYSTEM 136 174 MHz PERSONAL TWO WAY FM RADIO COMBINATION Ericsson Inc Private Radio Systems Mountain View Road Lynchburg Virginia 24502 1 800 528 7711 Outsi...

Страница 2: ...imum Attack Time 25 milliseconds PTT Pushed Audio Frequency Response Within 1 and 3 dB of a 6 dB octave pre emphasis from 300 Hz to 3000 Hz RECEIVE Sensitivity 12 dB SINAD 116 dBm Spurious Emissions 5...

Страница 3: ...e squelch opening threshold can be programmed for each channel HB UHF 800 MHz GENERAL ELECTRIC GENERAL ELECTRIC GENERAL ELECTRIC OR OR STANDARD MODEL SCAN MODEL SYSTEM MODEL STANDARD CAPACITY HIGH CAP...

Страница 4: ...first priority channel takes precedence over the second priority channel and the second priority channel takes precedence over the user selected channel Manual High Low Power Selection If programmed i...

Страница 5: ...nnel by simultaneously depressing both the and volume buttons 4 Adjust the audio volume to the desired level by pressing the mark side to turn the volume up or the mark side to turn the volume down of...

Страница 6: ...re boards as follows Radio Board carries the transmit receive and fre quency synthesizer circuits Control Board supports logic control and audio processor circuits Display Board carries LCD displays S...

Страница 7: ...o Figure 6 RF Amplifier Mixer RF from the an tenna or UDC connector is coupled through transmit low pass filter FN and RF switching diode CR201 to the input of the RF amplifier circuit Low pass filter...

Страница 8: ...quency phase and the reference VCTCXO and is applied to the VCO on frequency A lock detect output is developed from Pin 9 output of A102 This output is checked by the micro computer to prevent transmi...

Страница 9: ...nal Data Buffer A5 The External Data Buffer is located between the UDC connector and the microcomputer for protection of the inter nal circuits Signaling Board The Signaling Board consists of the foll...

Страница 10: ...en head wrench for removing set screws Pencil type soldering iron 25 40 Watts with a fine tip Step 1 To gain access to the radio loosen but do not remove the four captive screws shown at and Carefully...

Страница 11: ...Figure 11 Disassembly Figure 12 Disassembly Step 1 Figure 13 Disassembly Step 2 Figure 14 Disassembly Step 3 LBI 31629 10...

Страница 12: ...Figure 15 Disassembly Step 4 Figure 16 Disassembly Step 5 Figure 17 Disassembly Step 6 Figure 18 Disassembly Step 7 LBI 31629 11...

Страница 13: ...B801508P2 Earpiece kit PDAC1B 19B801508P8 GE STAR Lanyard PDAE1A 19B801508P1 Speaker Microphone PDAE1B 19B801508P4 Speaker Microphone with GE STAR Lanyard PDAE1C 19B801508P6 Speaker Microphone Antenna...

Страница 14: ...ds of time 2 A regularly performed duty cycle which allows the battery to expend only a limited portion of its capac ity If the nickel cadmium battery is only sparingly or seldom used and is left on c...

Страница 15: ...INTERCONNECTION DIAGRAM LBI 31629 14...

Страница 16: ...RADIO BOARD A4WE03739 40 OUTLINE DIAGRAM COMPONENT SIDE SOLDER SIDE LBI 31629 15...

Страница 17: ...SCHEMATIC DIAGRAM RADIO SCHEMATIC DIAGRAM WITH TYPICAL VOLTAGE A4WE03739 40 LBI 31629 16...

Страница 18: ...Controller Board A4WE04023 OUTLINE DIAGRAM COMPONENT SIDE SOLDER SIDE LBI 31629 17...

Страница 19: ...SCHEMATIC DIAGRAM Controller Board A4WE04023 LBI 31629 18...

Страница 20: ...Signalling Board A4WE04024 OUTLINE DIAGRAM SCHEMATIC DIAGRAM COMPONENT SIDE SOLDER SIDE M PD Signaling Board A4WE04024 LBI 31629 19...

Страница 21: ...LCD Board A4WE03737 OUTLINE DIAGRAM COMPONENT SIDE SOLDER SIDE LBI 31629 20...

Страница 22: ...SCHEMATIC DIAGRAM LCD 1 Board A4WE03737 LBI 31629 21...

Страница 23: ...SCHEMATIC OUTLINE DIAGRAM Battery Packs LBI 31629 22...

Страница 24: ...MECHANICAL PARTS BREAKDOWN M PD EXPLODED VIEW SYSTEM TYPE A1WL09006 LBI 31629 23...

Страница 25: ...PARTS LIST LBI 31629 24...

Страница 26: ...PARTS LIST LBI 31629 25...

Страница 27: ...PARTS LIST LBI 31629 26...

Страница 28: ...PARTS LIST LBI 31629 27...

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