Gai-tronics IPE2500A, IPE2500A-MLS Paging Encoder / Desktop Co Uživatelský manuál stáhnout pdf (Strana 41)

IPE2500A and IPE2500A-MLS Paging Encoder/Desktop Controller Operation

35 03/12

Frequency Changing

Frequency changing allows the PC to direct the IPE2500A to change the current transmit frequency to a

newly specified transmit frequency such as F12.

Byte Value Description

0 5 ‘5’ (0x35): Always for Frequency Change

1 Y1 First ASCII digit of frequency number to select (most significant digit)

2 Y2 Second ASCII digit of frequency number to select (least significant digit)

3–9 X Don’t care/Unused

Example:

To change the current frequency to F12:

PC to IPE2500A: ‘^’, <CR>

IPE2500A to PC: ‘0’, ‘1’, ‘8’ (Response)

PC to IPE2500A: ‘5’, ‘1’, ‘2’, ‘~’ (Frequency changed to F12)

IPE2500A to PC: ‘~’ (Acknowledge that frequency change is complete)

Custom Tones

Custom tones allow the PC to direct the IPE2500A to initiate a transmission and generate a specified tone

frequency. The unit remains keyed to allow additional tones to be generated until the PC directs the

IPE2500A to cease transmission.

Byte Value Description

0 4 ‘4’ (0x34): Always for Custom Tones

1 0 or 1 ‘0’ (0x30): Cease Transmission

‘1’ (0x31): Initiate Transmission (must remain ‘1’on subsequent tone generations)

2–3 MSW Most significant word of ASCII frequency in hex

4–5 LSW Least significant word of ASCII frequency in hex

6–9 X Don’t care/Unused

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 86 87

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Gai-tronics IPE2500A, IPE2500A-MLS Paging Encoder / Desktop Co Uživatelský manuál Strana 41