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Salcom 12-62 POCSAG Product Information

Paging transmitter
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Enlarged version
12-62-0000
Paging Transmitter
PRODUCT INFORMATION
Sea Air and Land Communications Ltd, PO Box 76237, 10 Magdala Place, Christchurch, New Zealand
12-62 SYNTHESIZED NRZ TRANSMITTER USER'S MANUAL
12-62 POCSAG
PAGING TRANSMITTER
1.0
DESCRIPTION
The 12-62 is a 138 - 174 MHz (VHF) or 427.5 - 475 MHz (UHF) 4 watt POCSAG
paging transmitter with an in-built encoder. All parameters are programmable such as:
frequency, power output, deviation, POCSAG or NRZ data transmission.
The unit can be controlled via a USB port or an RS232 serial interface to provide
numeric, alphanumeric and tone-only POCSAG encoding. This enables a user to call
a pager (over 2,000,000 codes), append an appropriate priority level (1 of 4), and add
a numeric or alphanumeric message.
The 12-62 supports multiple message queuing, and will queue up to eight 240
character messages, or as many smaller messages that will fit into the available
memory buffer (up to 80). Pre-defined input messages are limited to a maximum
length of 40 characters which may be configured using the Salcom programming
software. Control via the USB or Serial port is achieved using ASCII character
commands.
The unit supports 4 discrete inputs with a different pre-programmed message on high
and/or low transition, plus voltage detection messages on the power input.
The inputs can be configured for a number of options. Provision to transmit a
message more than once and variable time between transmissions are catered for.
The USB port or the RS232 serial port can be used to initiate paging transmissions
using the SALCOM propriety protocol, Paging Entry Protocol (PET) or Telocator
Alphanumeric Protocol (TAP) PG1 protocol. These ports can be used concurrently
making it possible to connect a telephone interface unit and still initiate paging
transmissions via the USB port.
Over temperature cutout:
If the transmitter operates for extended periods in a hot
environment, a protective thermal cutout may operate to reduce the output power to a
safe level. It will reset when the unit temperature has fallen to below 70 deg.
Transmitter Duty cycle: The transmitter duty cycle is rated as 50% with a max 'on'
time of 5 minutes. Higher duty cycles may be possible. Contact Salcom for advice.
Sea Air and Land Communications Ltd
Issue 1262UG 1011
Page 1

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Summary of Contents for Salcom 12-62 POCSAG

  • Page 1 Transmitter Duty cycle: The transmitter duty cycle is rated as 50% with a max ‘on’ time of 5 minutes. Higher duty cycles may be possible. Contact Salcom for advice. Sea Air and Land Communications Ltd, PO Box 76237, 10 Magdala Place, Christchurch, New Zealand...

  • Page 2: Warranty

    12-62 SYNTHESIZED NRZ TRANSMITTER USER’S MANUAL Issue 1262UG 1011 12-62 SYNTHESIZED NRZ TRANSMITTER USER’S MANUAL Issue 1262UG 1011 After a debounce period, the green LED will flash rapidly if the low supply detector is activated. WARRANTY The RED LED will indicate when the unit is transmitting. A flashing RED LED indicates the unit cannot transmit as either the synthesiser is out of lock, the 12-62 is critically hot or an internal fault has been detected.
  • Page 3 Messages can contain any alphanumeric character. The 12-62 will accept the standard ASCII 7 bit character set. Salcom protocol takes the basic form: P PX X XX X XX sLsM M M M M M <C R > Where: Numeric transmissions is either CA (512 baud alpha), CN (512 baud numeric), ca (1200 baud Messages can contain numeric characters and some symbols.

  • Page 4: Troubleshooting

    > RF frequency and output power transmission > 99 pager numbers for use with the Salcom 12-36 telephone interface. Once the program is running, the opening screen appears . Use the mouse to 10.0 PROGRAMMING select the configuration fields for each feature.
  • Page 5 All inputs may be configured in a similar fashion, including supply voltage be sent at the selected baud rate (512 or 1200 Baud). monitoring. The input drop down box provides support for the 4 inputs Note: baud rate changes are not applied to serially generated Salcom protocol available on S10. messages.

  • Page 6: Specifications

    12-62 SYNTHESIZED NRZ TRANSMITTER USER’S MANUAL Issue 1262UG 1011 10.7 PSD 12-36 Support: To use the 12-62 with the Salcom 12-36 telephone Min Off Air: When the 12-62 has exceeded the max on air continuous interface, Salcom protocol must be selected. Once selected, 12-36 support transmission time, the Min OFF Air setting controls how long the transmitter will can be enabled by selecting Options->General->Enable 12-36 support.

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