Specifications - Keysight 778D Operating And Service Manual

2

Specifications

Specifications
Specifications for the 778D are shown in the following table.
Table 2-1
Characteristic
Frequency range
Directivity
Auxiliary arm 0.1 to 1.0 GHz
Auxiliary arm 1.0 to 2.0 GHz
Coupling attenuation
Coupling variation
Cyclical variation
Tracking
SWR
Insertion loss
Maximum main line power
Accessories available adapters
Connectors
Dimension
Net weight
Options available
[a] Adapters from APC-7 to TNC, GR-900, GR-874 as well as the above are available from Amphenol RF Division, Danbury, CN)
16
Specifications
Value
100 to 2000 MHz (usable below 100 MHz)
See figure on
A 36 dB
B 30 dB
A 32 dB
B 30 dB
Nominal coupling above 450 MHz is 20 dB.
Nominal coupling below 450 MHz is 20 dB increasing with a slope of 0.006
dB/MHz for decreasing frequency.
±1.5 dB from nominal
Frequency is similar to
Auxiliary outputs typically track within 0.7 dB.
Phase tracking typically 4°.
Primary Line ≤1.1
Auxiliary Arms ≤1.1
0.6 dB
50 W average
500 W peak
11533A APC-7 to SMA male
11534A APC-7 to SMA female
[a]
11525A APC-7 to Type N male
11524A APC-7 to Type N female
Choice of main line connectors (see options).
Auxiliary Arms have Type N female.
All Type N connectors are stainless steel, compatible with MIL-C-39012 and
MIL-C-71.
16-3/4 in long x 4-3/8 in high x 1-3/16 in wide
(425 mm x 111 mm x 30 mm)
3-3/4 lb (1.5 kg)
778D (Type N female output, Type N male input connectors)
Option 011 (APC-7 output, Type N female input connectors)
Option 012 (Type N male output, Type N female input connectors)
page 14
Figure 2-1 on page 17
Keysight 778D Operating and Service Manual