Maintenance
47
Specifications, RS-232 Interface
Table 7-27 RS-232 Interface Module
Specifications, IEEE-488 GPIB Interface
Table 7-28 IEEE-488 Interface
Figure 20 High Frequency Derating 1
Logic Levels
Meets all EIA Standard RS-232-C specifications
Modes of Operation
Switch and bus selectable
Talk Always
Allows the 4421 to send to the bus keyboard-initiated
measurements only
Addressable
Allows the 4421 to be commanded by an RS-232 interface controller
Connector
RS-232 Interface Type
Humidity, Max
95% (non-condensing)
Altitude, Max
10,000 feet (3,000 m)
Temperature Range
Operating
Storage
0 to 50º C (32 to 122º F)
–20 to +50º C (–4 to +122º F)
Dimensions
6.5”L x 4.5” W (165 x 115 mm)
Weight
0.5 lbs (0.23 kg) nominal
Logic Levels
Meets all IEEE Standard 488-1978 specifications
Modes of Operation
Switch and bus selectable
Talk Only
Allows the 4421 to send to the bus keyboard-initiated measurements
only
Addressable
Allows the 4422 to be addressed as talker or listener under the
command of an IEEE-488 bus controller
Connector
Standard IEEE-488 bus type
Humidity, Max
95% (non-condensing)
Altitude, Max
10,000 feet (3,000 m)
Temperature Range
Operating
Storage
0 to 50º C (32 to 122º F)
–20 to +50º C (–4 to +122º F)
Dimensions
6.5”L x 4.5” W (165 x 115 mm)
Weight, Nominal
0.5 lbs (0.23 kg)
Frequency (MHz)
Load Derating Above 65 MHz
5 & 10 kW Loads
Max.
Pow
er
(kW
)
10
100
1000
0
1
2
3
4
5
6
7
8
9
10
