OKAYO DR 600 User Manual

DR2.4：

The DR2.4 module is designed for 2.4GHz ISM band with 10dBm output power wireless
applications using AMICCOM A7125 FSK transceiver and Transistor BFG425 PHILIPS.
This
module features a fully programmable frequency synthesizer by SPI. The data rate is
2Mbps.

External PA Control
To gain the most available hopping channels under FCC / ETSI regulations, user has to
switch
off Ext-PA before A7125’s PA (Em-PA) to minimize spurious emission. In the other
words,
band edge becomes critical so that A7125 supports two methods (EOPD and PASW) to let
user
switch Ext-PA easily.

(1) EOPD (End Of Packet Delay)
Set GIO2S = [1100] and EOPDS=1, then EOPD outputs 20 us pulse to GIO2 pin

(2) PASW (Ext-PA Switch)
Set GIO2S = [0001] and EOPDS=1, then PASW outputs to GIO2 pin. However, GIO2 Pin
Register shall set different in TX mode (0x07) and RX mode (0x13) to avoid FSYNC
triggering in
RX mode. Therefore, before issue TX Strobe command, write 0x07 to GIO2 Pin Register.
Before
issue RX Strobe command, write 0x13 to GIO2 Pin Register. Then, PASW is only active
in TX
mode. In such case, user just needs to connect GIO2 pin to external SWITCH (Ext-SW) of
Ext-PA
as show below. Be notice, PASW is also able to output to GIO1 pin. In addition, user can
configure
PASW to be active high or active low (by GIO2I) based on the polarity of Ext-SW.

FEDERAL COMMUNICATIONS COMMISSION INTERFERENCE STATEMENT

This equipment has been tested and found to comply with the limit s for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cau se harmful
interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by
turning the equipment of f and on, the user is encouraged to try to correct the
interference by one or more of the following measures:

-- Reorient or relocate the receiving antenna.

-- Increase the separation between the equipment and receiver.

-- Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.

-- Consult the dealer or an experienced radio/TV technician for help.

CAUTION:
Any ch

anges or modifications not expressly approved by the party responsible for

compliance could void the user's authority to operate the equipment.

This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.

Label for end product must include “Contains FCC ID: NTMDR-600” or “A RF transmitter inside,
FCC ID: NTMDR-600”.