AES 7880 B Users Manual

Notice:

label:

AES 7880-B

UHF

DATA TRANSCEIVER

USER MANUAL

October 1, 2004

The exterior of any product containing this device must contain the following

“Contains FCC ID : L9N-7880-B”

Warning:

This device must be professionally installed with appropriate power supply
and antenna in order to ensure proper operation. The antenna gain must not
exceed 10.5 dBi.

Warning:

This device may not be modified by the user. Any modifications not
expressly approved by AES Corporation could void the user’s authority to operate
the equipment.

Warning:

For FCC RF exposure compliance purpose, this device may not be
incorporated into any product which operates within 20 cm of a person under
normal operation.

1.0 Description

The AES Model 7880-B UHF Data Transceiver permits data to be transmitted in
the 450 ~ 470 MHz band of frequencies. The maximum output power is 120 mW. The
data rate can be in the range of 2400 ~ 9600 baud. The 7880-B interfaces with an
embedded microprocessor using a simple 4-wire serial Programming Port . T he operating
parameters are set by AES approved software.

B2.0 Signals

The 7880-B has 20 pins, consisting of 2 rows of 10 pins each. The following
diagram (bottom v iew) sh ows the pin numbe ring sc heme :

Th e follo wing table list s the signal pins a n d their function:

Pin Name Function

19 PSEL Select Pr ogramming Port (act iv e low)
18 PCLK Serial Clock for Pr ogramming Port
17 PDI Data Input for Programing Port
16 PDO Data Output from Programming Port

2 DCLK Data Clock for Synchronous Data
3 DIO Data Input/Output for Synchronous Data

5 VCC Power (+5 volts, 200 mA max)
1 GND Ground
8 “
10 “
11 “
13 “