Programming instructions

16 Specifications
Agilent 44477A
Form-C Relay
Module
Agilent 44477A module provides seven independent, break-before-make,
SPDT Form-C latching relays, the specifications of it are listed in the table
below.
ITEMS SPECIFICATIONS
INPUT CHARACTERISTICS
Total Channels: 7
Maximum Voltage Terminal-Terminal or Terminal-Chassis: 250 V dc or ac rms, 350 V ac peak
Maximum Current Per Channel:
Per Module:
2 A, dc or ac rms
14 A, dc or ac rms
Maximum Power Per Channel:
Per Module:
60 W dc; 500 VA ac
420 W dc; 3500 VA ac
Maximum Overvoltage Transients: 1400 V
pk
Thermal Offset: < 3 µV per channel
Initial Closed Channel Resistance: < 1 Ω
Relay Life Dry Load of < 300 mA & < 10 V:
Maximum Rated Load:
10
8
operations/chan
10
5
operations/chan
Maximum Scan Rate
a
:
43 Chans/sec
DC ISOLATION
Open Channel, Channel-Channel
(with 1 channel closed)
≤ (40
o
C, 60% RH):
≤ (40
o
C, 95% RH):
> 10
11
Ω
>10
9
Ω
Channel-Chassis
(with 1 channel closed)
≤ (40
o
C, 60% RH):
≤ (40
o
C, 95% RH):
> 5 x 10
11
Ω
> 10
10
Ω
AC ISOLATION/PERFORMANCE
b
Capacitance (with 1 channel closed) Open Channel, Channel-Channel:
Channel-Chassis:
< 10 pF
< 25 pF
Insertion Loss (with 50Ω termination) 100 kHz:
1 MHz:
10 MHz:
< 0.20 dB
< 0.25 dB
< 0.50 dB
Crosstalk (with 50Ω termination) 100 kHz:
1 MHz:
10 MHz:
< -73 dB
< -53 dB
< -33 dB
a. Using Agilent 44474A external increment & channel closed, display off.
b. With chassis of all instruments connected, and with the Low of input lines connected to the Low of output lines (either directly
or via Agilent 3499A/B/C switched channels)