Instruction manual

ATLAS 800 Series System Manual Option Module Pinouts

Engineering Guidelines

Pinout 17. Quad USSI Module (EIA-530)

Pin Signal Description Pin Signal Description Pin Signal Description

1 Shield (Ground) 10 Carrier Detect (B) 19 Request to Send (B)

2 Transmit Data (A) 11 Ext. Transmit Clock (B) 20 DTE Ready (A)

3 Received Data (A) 12 Transmit Clock (B) 21 Remote Loopback

4 Request to Send (A) 13 Clear to Send (B) 22 DCE Ready (B)

5 Clear to Send (A) 14 Transmit Data (B) 23 DTE Ready (B)

6 DCE Ready (A) 15 Transmit Clock (A) 24 Ext. Transmit Clock (A)

7 Signal Ground 16 Received Data (B) 25 Test Mode

8 Carrier Detect (A) 17 Receive Clock (A)

9 Received Clock (B) 18 Local Loopback

Pinout 18. Quad USSI Module (RS-449/V.36)

Pin Signal Description Pin Signal Description Pin Signal Description

1 Shield (Ground) 14 Remote Loopback 27 Clear to Send (B)

2 Signaling Rate

Indicator

15 Ring Indicator 28 Terminal in Service

3 Not Used 16 Select Frequency 29 DCE Ready (B)

4 Transmit Data (A) 17 Ext. Transmit Clock (A) 30 DTE Ready (B)

5 Transmit Clock (A) 18 Test Mode 31 Carrier Detect (B)

6 Received Data (A) 19 Signal Ground 32 Select Standby

7 Request to Send (A) 20 Receive Common 33 Signal Quality

8 Receive Clock (A) 21 Not Used 34 New Signal

9 Clear to Send (A) 22 Transmit Data (B) 35 Ext. Transmit Clock (B)

10 Local Loopback 23 Transmit Clock (B) 36 Standby/Indicator

11 DCE Ready (A) 24 Receive Data (B) 37 Send Common

12 DTE Ready (A) 25 Request to Send (B)

13 Carrier Detect (A) 26 Receive Clock (B)