Keysight E4981A - Electrical Characteristics; Output Signal

Keysight E4981A 120 Hz/1 kHz/1 MHz Capacitance Meter 161
Using Scanner Interface
Electrical Characteristics
Electrical Characteristics
Output signal
The output signals (/INDEX and /EOM) are available as open collector outputs
with photo coupler isolated. You can obtain each voltage output by connecting
a pull-up resistor (refer to Table 9-2) to the exterior of the E4981A.
Table 9-3 shows the electrical characteristics of the output signals. Figure 9-4
shows the circuit diagram of the output signals.
Table 9-2 Guide for pull-up resistor values
Pull-up voltage
[V]
Resistance value [Ω]
Typical resistance
Resistance
value [Ω]
Keysight part
number
5 1.7 k (5 V/3 mA) 1.78 k 0757-0278
9 3.0 k (9 V/3 mA) 3.16 k 0757-0279
12 4.0 k (12 V/3 mA) 4.22 k 0698-3154
15 5.0 k (15 V/3 mA) 5.11 k 0757-0438
Table 9-3 Electrical characteristics of the scanner interface output signals
Output signal
Output voltage [V] Maximum
current
[mA]
LOW HIGH
/INDEX, /EOM 0 - 0.5
EXT_DCV
1
6
1. EXT_DCV: +5 V - +15 V