Atec Agilent-8720D - Manual (Page 6)

6
Agilent 8719D, 8720D, 8722D Option 007
Agilent 8719D, 8720D, 8722D Option 085
Includes instruments with Options 012 and/or 089
Option 007 replaces the standard solid-state trans-
fer switch with a mechanical switch to provide
higher output power.
Option 085 adds internally controlled 0 to 55 dB
step attenuators (5 dB steps) in the receiver path
of both ports, an RF loop that allows the addition
of an amplifier before the transfer switch, and RF
loops after the switch that allow insertion of isola-
tors, required for measurements above 1 watt. An
internal reference channel switch is added and
internal bias tees are deleted. This system is capa-
ble of full two-port calibrated measurements to 20
watts. Measurements up to 100 watts may be possi-
ble using specific configurations. Option 085 is not
compatible with Option 400.
System dynamic r
1
ange
Option 007 Option 085
Frequency Range 8719D/20D 8722D 8719D/20D 8722D
0.05 GHz 82 dB 72 dB 77 dB 67 dB
0.05 to 2 GHz 1 105 dB 98 dB 100 dB 93 dB
2 to 8 GHz 105 dB 98 dB 100 dB 93 dB
8 to 20 GHz 105 dB 96 dB 100 dB 91 dB
20 to 40 GHz — 85 dB — 77 dB
1. Rolls off below 840 MHz to specified value at 50 MHz
Maximum output power
Option 007 Option 085 2
8719D/8720D +10 dBm +5 dBm
8722D (0.05 to 20 GHz) 0 dBm –5 dBm
8722D (20 to 40 GHz) –5 dBm –10 dBm
2. With jumper cable installed between RF out and RF in ports,
i.e. no external amplification.
Supplemental characteristics (Option 085)
Maximum R-channel input level: 0 dBm
Minimum R-channel input level: –34 dBm
Maximum RF port input: +43 dBm
Attenuators: 55 dB maximum, 5 dB steps
Maximum test port power (no isolators): +30 dBm
Maximum test port power (with high power isolators): +43 dBm
System performance (continued)
Option 085 block diagram and example
high power measurement setup
Mechanical
transfer switch
Source
Samplers
Reference
switch
Customer-supplied
booster amplifier and coupler
RF out RF in +43 dBm max
A
R
B
–55 dB –55 dB
Customer-supplied isolation
(for output above +30 dBm)
Ref input
0 dBm max
Amplifier
under test
+43 dBm max output
(20 watts) +43 dBm max input
(20 watts)