PCM-2 Manual.pdf - Voss Associates

Central Computer RF Modem Option (PCM2 OPT19)
The Central Computer RF Modem Option consists of a bi-directional 500 mW
spread spectrum RF data modem that connects to a personal computer (Central
Computer). The RF Modem is powered by a 9 Vdc 500 mA wall transformer
type power supply which must be plugged into 115 Vac at the computer. Since
the RF modem operates within the FCC's guidelines for spread spectrum systems,
it does not require an FCC site license.
Utilizing this option with the PCM-2 RF Modem Option (PCM2 OPTI8) and the
PCMHOST program (PCM2 OPT20), allows monitor and control of a network of
up to 255 PCM-2s from an IBM-PC compatible computer. PCM-2s may be
connected via RS-232, telephone modems, RF modems and RS-485. By
connecting one RF modem to the central computer and one RF modem to each
PCM-2, one can quickly set up a network of PCM-2s.
Before using the RF Modems for the first time, the RF modems must be properly
configured. Configuration parameters are stored in non-volatile memory so it is
not necessary to repeat this procedure. Refer to the previous section on the PCM­
2 RF Modem Option for configuration instructions.
Central Computer
RF Modem Option
Parts List
Reference PCM-2 Option 19, Central Computer RF Modem Assembly
I Item
Ref #
Part Name Description Manufacturer and Part
Number
Eberline Part
Number
010 Cable R/F Modem Eberline Instruments YPll562l19
020 RF Modem Spread
Spectrum
Proxim, Model
#RDA-500
VEMIl05
17-98 PCM2.M!\N/ /lev /\/!\[Jli! 19%