HP 8921A Option 600 CDMA Cell Site Test System

Option 600 for the HP 8921A adds the HP 83205A CDMA cellular adapter to the cell site test set to provide testing of CDMA (IS-95A and IS-97) base station equipment. This system provides signal generation and analysis of QPSK/OQPSK signals. The system measures power in each Walsh coded signal, code channel timing, and code channel phase relative to the pilot. Power measurements are made with a true average power detection scheme to optimize characterization of CDMA system performance. Another significant contribution of the HP 8921A/83205A is its measurement of waveform quality rho for CDMA base stations. This new measurement was developed by Hewlett-Packard to indicate the overall performance level of the CDMA transmitter. CDPD Mobile Data Base Station (MDBS) test features and PCS test capability can be added to HP 8921A Option 600 CDMA capabilities.

[ Features ]

All HP 8921A standard features plus the following CDMA cellular system test capability
Code domain power, timing, and phase analysis
Waveform quality (rho), frequency error, and pilot time offset
True-average power and CDMA channel power measurements
Built-in Added White Gaussian Noise (AWGN) source for calibrated Eb/No settings
Optional CDPD Mobile Data Base Station (MDBS) test capability
Upgrade to PCS test with the HP 83236A PCS Interface

[ Specifications ]

CDMA Signal Generator 
Frequency Range:
	824 to 894 MHz
	(usable from 800 MHz to 1000 MHz 
        and from 4 MHz to 200 MHz with 
        degraded rho and carrier feedthrough performance)
Output Level Range:
	RF In/Out:
		-19 to -137 dBm
	Duplex Out:
		+4 to -127 dBm
Output Level Accuracy:
	RF In/Out:
		+/- 2.0 dB
		Typically +/- 1.0 dB
	Duplex Out:
		+/- 1.7 dB
		typically +/- 1.0 dB
Residual rho:
	better than 0.96, typically > 0.98
Reverse Link Source Modulation:
	OQSPK per TIA IS-95
Reverse Link Source Modulation Data:
	internal data buffer, Idle (all zeroes)
PN Offset:
	Adjustable from 0 to 511 units (1 unit = 64 chips)
Data Buffer:
	Size/length:
		5400 frames
	Modes:
		Single, Continuous Looping, and Idle
	Input Data Rate: 
		9600 bps; 14,400 bps
CDMA Analyzer
Waveform Quality Measurement(rho)
	(IS-95 forward or reverse link formats (QPSK or OQPSK)
Input Frequency Range:
	4 MHz to 1000 MHz
Input Level Range:
	RF In/Out:
		-10 dBm to +48 dBm
	Antenna:
		-46 dBm to +17 dBm
Rho Measurement Range:
	0.5 to 1.00
Rho Measurement Accuracy:
	< +/- 0.005
Frequency Error Measurement Accuracy:
	+/- 30 Hz using a measurement interval >/= 0.5 ms
Average Power Measurement
	Input Frequency Range:
		30 MHz to 1000 MHz
	Measurement Range:
		1 mW to 60 W (0 to +48 dBm)
	Measurement Accuracy:
		+/-5% +/-1 uW, at 25 degrees C +/-10 degrees C
		+/-10% +/-1 uW, from 0 degrees to 55 degrees C
Channel Power Measurement
	Input Frequency Range:
		4 MHz to 1000 MHz
	Measurement Range:
		-10 dBm to +48 dBm
	Measurement Accuracy:
		+/-1 dB over a range of +/-5 degrees C
                      from the temperature of last calibration

Code Domain Analyzer 
Code DomainPower Mesurement
	Input Frequency Range:
		4 MHz to 1000 MHz
	Input Level Range:
		RF In/Out:
			-10 dBm to +48 dBm
		Antenna:
			-46 dBm to +17 dBm
	Measurement Dynamic Range:
		40 dB
	Measurement Accuracy:
		+/-0.5 dB using a measurement interval >/= 0.5 ms
	Carrier Frequency Offset Accuracy:
		+/-30 Hz using a measurement interval >/= 0.5 ms
	Pilot Time Offset Accuracy:
		typically <500 nsec from even second
                signal to start of PN sequence
Code Domain Timing Measurement
	(Pilot to Code Channel Time Tolerance)
	Input Level Range:
		4 MHz to 1000 MHz
	Input Level Range:
		RF In/Out:
			-10 dBm to +48 dBm
		Antenna:
			-46 dBm to +17 dBm
	Measurement Accuracy:
		+/-10 ns using a measurement interval
                       of 1.25 ms and >/=10 averages
Code Domain Phase Measurement
	(Pilot to Code Channel Phase Tolerance)
	Input Frequency Range:
		1 MHz to 1000 MHz
	Input Level Range:
		RF In/Out:
			-10 dBm to +48 dBm
		Antenna:
			-46 dBm to +17 dBm
	Measurement Accuracy:
		+/-20 mrad using a measurement interval 
                       of 1.25 ms and >/= averages

CDMA Reference
Input Frequencies:
	19.6608 MHz, 15 MHz, 10 MHz, 9.8304 MHz,
        5 MHz, 4.9152 MHz, 2.4576 MHz, 1.2288 MHz,
        and 1 MHz
Even Second Sync Input:
	(BNC) accepts a rising edge to reset the internal
        short sequences and CDMA clocks. Periodic inputs 
        should have a period of 2 seconds and a minimum 
        pulse width of >50 ns

CDPD Specifications 
The following CDPD specifications apply when the  HP 83205A
option 002 or 003 (HP 8921A Option 602 or 603)is operating with 
the HP 8921A.

CDPD Signal Generator (at HP 8921A Duplex Out)
        Output:  
	        Level Range and Level Accuracy:  
                        Same as HP 8921A
	        Reverse Power:  
                        Same as HP 8921A 
  	        Frequency Range:
                        Same as HP 8921A
	        Frequency Accuracy:  
                        ±500Hz, typically ±50Hz
        Spectral Purity:  
    	           Spurious Signals, Adjacent Channels:  
                        <-26 dBc
	           Spurious Signals, First Alternate Channel:  
                        <-45 dBc
	           Spurious Signals, Second Alternate Channel:  
                        < 60 dBc
        Switching Speed:
                   Typically <150 msec to be within 1 kHz
        Transmitter On/Off Level and Timing:
                   >15 dB down in <1msec
        Modulation Type:
                   GMSK with BT=0.5
        Modulation Accuracy:
                   <5% error in modulation index

CDPD Analyzer
        RF Frequency Range: 
                   Same as HP 8921A
        Input Level Range: 
                   Same as HP 8921A
        RF Power Measurement:
	           Accuracy:  
                        RF in/out: 5%, ±0.01 mW (at 25ˆ¯10°C) for single
                        signal >200 mw, 10% over full temperature range
        Frequency Error Accuracy: 
                   Time base accuracy ±1 Hz
        Modulation Index Accuracy:  
                   <0.1% error in modulation index
        Adjacent Channel Power Measurement Floor:  
                   Typically -45 dBc
        Alternate Channel Power Measurement Noise Floor: 
                   Typically -55 dBc for input levels > -34 dBm

[ Ordering ]

HP 8921A Cell Site Test Set Opt 600 CDMA Cell Site Test System Opt 601 CDMA PCS Cell Site Test System Opt 602 CDPD MDBS Cell Site Test System Opt 603 CDMA/CDPD MDBS Cell Site Test System Opt G21 Factory retrofit of average power capabilities for units with serial prefix less than or equal to 3501A HP 83205A CDMA Cellular Adapter Opt 001 CDMA Cellular Adapter Opt 002 CDPD Cellular Adapter, upgradable to CDMA Opt 003 CDMA/CDPD Cellular Adapter Opt R13 CDPD Retrofit Kit for HP 83205A Opt. 001 to Opt. 003 Opt R23 CDMA Retrofit Kit for HP 83205A opt. 002 to Opt. 003 Opt. W30 Three-Year Return Repair Service Opt. W50 Five-Year Return Repair Service

[ Key Literature ]