Technical Manual Issue 2.1 4000 Digital Series II
Page 102 STA0381
Output Balance <-30dBu
Linearity ±1dB
GPI Inputs: 37 way D-type, Opto-isolated
GPI Outputs: 37 way D-type,
Isolated relay Open collector driver
Control Inputs/Outputs: 25 way D-type RS232,
9 way D-type RS422,
Thinnet / AUI Ethernet®
AC power Inputs/Outputs
4920: 2x IEC AC input,
9 way D-type Alarm o/p
4420: 2x IEC AC input