Adcom A723, A720 manual Transmitter all measurements made on a 50 Ω resistive load

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Table 6. Operational Parameters (Continued)

Parameter	Min	Typ	Max	Unit

Receiver

Sensitivity (10 db S/N)		-93 (A720)		dBm
		-105(A723)

Image Frequency Attenuation (1st IF = 45 MHz)	35			dB

Local Oscillator Leakage			2	nW

Adjacent Channel Attenuation (both versions)	55			dB

RSSI Dynamic	90			dB

Operating Current (incl. onboard microcontroller)c			15	mA
Transmitter (all measurements made on a 50 Ω resistive load)

Output Power	7	9	10	dBm

Spurious Radiation (0 to 862 MHz)			2	nW

Spurious Radiation (862 MHz to 3.5 GHz)			200	nW

Adjacent Channel Power (12.5 kHz version)			-32	dBm

Adjacent Channel Power (25 kHz version)			-44	dBm

Occupied Bandwidth (12.5 kHz version)			8.5	kHz

Occupied Bandwidth (25 kHz version)			15	kHz

Operating Current (incl. onboard microcontroller)			50	mA

A720/A723 only

Analog Inputs	0		2.5	V

Analog to Digital Converter Resolution		8 (A720)		bits
		10 (A723)

Digital Inputs Vil			0.5	V
Digital Inputs Vih	2.5			V
Pulse Counter Input Frequencyd			1.5	Hz
Pulse Counter Resolution		8 (A720)		bits
		16 (A723)

Digital Outputs Sink/Source			2	mA

Digital Outputs Vol			0.3	V
Digital Outputs Voh	2.9			V

Image 58

Contents ADC N ADC N Contents Contents Introduction What are addIT devices?Installation issues Conventions ItalicsChapter Using the Base Station Opening the packagesInstalling the base station Installing the receiverInstalling the power supply AddIT Power SupplyReplacing the fuse Conﬁguring the softwareUsing the RTU Installing the RTU Shows an addIT RTUShows what a typical RTU ﬁeld installation looks like More about the LED tool Maintaining and servicing the RTU RTU batteryConﬁguring an addIT RTU in the addVANTAGE software Changing the battery Chapter Chapter Performing Advanced Functions Receiver connector Understanding connectorsDevice series RTU connectors Pins on an I/O Connector Top ViewAddIT RTU Power Connector Top View Conﬁguring the devicesSerial communication protocol General format of a commandGeneral format of an answer Series 1 devices Using terminal commandsSET Ownid nnnn SET PMP 63 SET OwnidSET PMP bl bh SET Slot 3600SET Freq 467112500 SET Freq freq stepSET Rssi value Querying the actual conﬁguration parameters SET RssiSeries 2 and 3 devices CmdsFreq FreqFreq 433925000 Freq 433925000 25000Slot PMP 193 CM 1 PMP 65 72193 cm SSTDEV ReplDEL Repl 5667DEL Dd mm yyyy hh mm ss si ft d1 d2 ... dn dd mm yyyy Data 5666 12/12/1998Data b1 b2 b3 ... bn Dn csFrame 38 description Data 6367 30/4/1999 Frame 39 descriptionImme DataRoute Fdev InfoTemp = internalTem p 146 900 Info 255 0 18/4/1999 21511 1.3 0 0 0 91Anlg Code Description Parameters Returns Sampling methods are deﬁned by three bits, as follows Return result depends on the control byte see table. However A720B and A723, but see also the comments in Remote on Performing Advanced Functions Command Code Deﬁnitions Port 193 RX 6789 Port 7/5/1999 183422193 TX #7851 BA 6789 B#234 BA 15190 BVER 1.3 Blst 30/8/2001 160341VER VER 2.0Notiﬁcations Device descriptors and storage handler Returned errors listCommand line interpreter Real time clockNotiﬁcations Chapter Appendix. Speciﬁcations Parameter Min Typ Max UnitTransmitter all measurements made on a 50 Ω resistive load Chapter Chapter Index INFO, 41 OWNID, 26 PMP PMP What a base station contains Xmit Credits Credits and ColophonColophon