User Manual

USER MANUAL

9-11

3.2 Test Modes

The various test modes are intended as a means of testing the radio for FCC approval and are not normally available

for use by the end-user. Entering into a test mode is to be accomplished by writing the eight-bit test number to S-

EXAMPLE: The host sets the radio’s test mode.

Host: ATS99=2<CR><LF>

Radio: OK<CR><LF>

Exiting from test mode may only be accomplished by the cycling of power to the radio.

Table 3.2-1 below provides a complete summary of all the test modes currently available within the OEM-900 radio

board.

Mode Number Description

0 Off. No test mode selected.

1 Sends continuous data at the test transmit frequency with the power amplifier on

2 Sends steady carrier at the test transmit frequency with the power amplifier on

3 Receives steady carrier at the test receive frequency

4 Sends continuous data at the test transmit frequency with the power amplifier off

5 Sends steady carrier at the test transmit frequency with the power amplifier off

Table 3.2-1 (Test Mode Summary)

3.3 RF Band Interleaving

The OEM-900 radio has a frequency range that spans from 902.2MHz to 927.7Mhz. This is further decomposed into

four interleaved bands, each of which is comprised of up to 63 discrete frequency channels.

The radio may be configured to block the use of frequencies that would cause interference with other in-field

equipment. Up to thirteen frequencies may be blocked from use by entering their values in any of S-registers S30

through S42.

EXAMPLE: The host instructs the radio not to use the 925.2MHz frequency channel.

Host: AT30=9252

Radio: OK<CR><LF>