HP 3457A Service Manual page 28

Table 1-1. Specifications
FREQUENCY AND PERIOD (Cont'd)
SENSITIVITY:
10mv rms or 100UA rms sine-wave
TRIGGERING:
Triggers and counts on zero crossings.
MEASUREMENT ACCURACY: +(% of reading)
FREQUENCY PERIOD % OF
READING
VOHz - 400Hz 100msec - 2.5msec 0.05
400Hz - 1.5MHz| 2.5msec 667nsec 0.01
MAXIMUM READING RATE:
2 readings/second (Integration time of 1 PLC, fast settling time, delay zero and math OFF,
and fixed range)
PLUG-IN OPTION
44491A Armature Relay Multiplexer Assembly
INPUT CHARACTERISTICS:
Eight two-wire armature relay channels and two current/actuator channels.
MAX4MUM VOLTAGE: (Terminal to Terminal or Terminal to Chassis)
250 VOC or 250 VAC rms
MAXIMUM CURRENT: (per channel)
1 amp DC or AC rms
THERMAL OFFSET:
< 3 microvolts
RELAY LIFE:
107 operations at maximum load (1.5 amps AC rms).
CLOSED CHANNEL RESISTANCE: (end of relay life)
< 2 ohms
MAXIMUM SWITCHING AND MEASUREMENT SPEED:
33 channels/second
ADJACENT CHANNEL CROSSTALK: (Channels terminated into 5U ohms)
+60 db @ 100KHz