Serial data cables – Grass Valley JEP-100 v.1.2.0 User Manual

Page 24

JEP-100 — Installation and Operating Manual

Section 1 — JEP-100 Control Panel

Serial Data Cables

The RS-422 cables used to connect CM-4000 System Controllers and control
panels consist of a 4-conductor (plus ground) cable. Maxi mum length per
bus, at 115k Baud, is 610 meters (2000 ft).

The rear panel serial data cable connectors on the CM-4000 and con trol
panels are 9-pin D, female. The control panel connectors are ar ranged for
loop-through wiring. No termination is required. While these connectors
are ESbus compatible, it should be noted that the Thomson serial data
cables use only 5 of the 9 pins described in the ESbus specification.

The following ready-made cables, with installed 9-pin D male connectors,
are available from Grass Valley (VDE cables include ferrite cores):

For those who wish to prepare their own cables, the pin-outs are shown in
Figure 5. The cable itself should be Belden 8723 or equiva lent.

Details concerning ferrite cores are given in

Figure 6

Figure 5. Serial data cable wiring. Reference: "Assembly, BCS-3000 Serial Data Cable," GrassValley
drawing no. 01-041600-TAB.

Table 1.

1 meter (3.3 ft)

8 meters (26.2 ft)

2 meters (6.6 ft)

16 meters (52.5 ft)

4 meters (13.1 ft)

32 meters (105 ft)

DB9P

(male)

Shield (drain)

Green

Black

White

DB9P

(male)

Red

Frame ground

CM#4000 System

Controller

(bus controller)

Control panel or

VTR

(tributary)

Receive A (#)

Transmit A (#)

Receive B (+)

Transmit B (+)