User`s guide

17
Table 6. RF and microwave selection table—specifications and characteristics
DC to 3 GHz DC to 26.5 GHz
[3]
34941A 34942A 34946A 34947A
Channels quad 1x4 quad 1x4 2 SPDT 3 SPDT
Switchtype 50Ωunterminated, 75Ωunterminated, 50Ωterminated 50Ωunterminated
latching relays latching relays
RF characteristics
Frequency range
[2]
DC to 3 GHz DC to 1.5 GHz DC to 4 GHz, DC to 4 GHz,
20 GHz or 20 GHz or
26.5 GHz 26.5 GHz
Insertion loss
[2]
   DCto4GHz<0.42dB, DCto4GHz<0.42dB,
(<40C/80%RH)   @20GHz<0.69dB, @20GHz<0.69dB
   @26.5GHz<0.8dB @26.5GHz<0.8dB
100MHz 0.15dB 0.15dB
1GHz 0.60dB 0.60dB
3GHz 1.40dB N/A
VSWR   DCto4GHz<1.15, DCto4GHz<1.15,
   @20GHz<1.30, @20GHz<1.30,
   @26.5GHz<1.6 @26.5GHz<1.6
100 MHz 1.03 1.15
1 GHz 1.25 1.35
3GHz 1.55 N/A
Isolation(dB)
[2]
 Contactfactory Contactfactory DCto4GHz>85dB, DCto4GHz>85dB,
   @20GHz>67dB, @20GHz>67dB,
   @26.5GHz>60dB @26.5GHz>60dB
100MHz 80dB 80dB
1GHz 58dB 60dB
3GHz 40dB N/A
Spurious noise
below1.3GHz -140dBm -140dBm 80dB 80dB
Risetime <80ps <160ps N/A N/A
Signaldelay <1ns <1ns N/A N/A
Capacitance <30pF <30pf N/A N/A
Switching characteristics
Max volts
[1]
 30V 30V 7VDC 7VDC
Maxcurrent 0.5A 0.5A N/A N/A
Max power (W) 10 W
[5]
10 W
[5]
1W@7VDC,50Wpeak
[4]
 1W@7VDC,50Wpeak
[4]
Offsetvoltage 10uV 10uV N/A N/A
Initialchannelresistance 1Ω 1Ω N/A N/A
Volt-Hertz limit 2 x 10
10
2 x 10
10
General characteristics
Relaylife 300,000at30V/10mAload; 300,000at30V/10mAload >5Mcycles, >5Mcycles,
 100,000at10WloadRFSAmeas 100,000at10WloadRFSAmeas 1Mw/drive28-32VDC 1Mw/drive28-32VDC
Open/close time 18 ms/18 ms 18 ms/18 ms < 15 ms/15 ms < 15 ms/15 ms
Connectortype FemaleSMA Mini75ΩSMB FemaleSMA FemaleSMA
Coilvoltage N/A N/A 24VDC 24VDC
Analogbusbackplane No No No No
connection
[1] Channel-to-earth
[2] 50Ωsource,50Ωload(75Ωfor34942A)
[3] Formoredetailedspecifications,seetheN1810TL
forthe34946AandN1810ULforthe34947A
[4] 10 usec maximum duration
[5] Max power is 1 W between 30 MHz and 1 GHz
forCISPR11compliance