Specifications

Canoga Perkins

Table 4-R.

Strap

Configurations

for RLSD (CD)

Output

The W1 / W2 strap connects chassis ground to signal ground (W2 position), connects chassis

ground through 100 ohms to signal ground (W1 position), or isolates chassis ground from signal

ground (jumper out). The W5, W6 and W7 jumpers, when installed, ground the midpoints of the

100 ohm termination resistances of the FIFO CLK, SCTE and TxD line receivers. These jump-

ers may provide improved performance in cases where the RS-422 inputs are bipolar rather

than the more common unipolar types. The W8, W9 and W15 / W16 jumpers are used for

converting to the Legacy configuration (see Figure 4-15).

4.9.1 Jumper Settings

All jumper settings and descriptions are listed in Table 4-Q. This interface has strap option

jumpers to configure the RLSD Output at J1-8 (DB-25) to support the KG-194 Resync function-

ality. Jumper straps W10 / W11 (adjacent to U11) and W12 / W13 / W14 (adjacent to U8)

implement this function (refer to Table 4-Q and Figure 4-6). Jumper straps W10 / W11 control

the ON / OFF level and W12 / W13 / W14 configure the RLSD Output to Bipolar (+6 V and -6 V)

or single-ended (+6 and 0 or -6 and 0).

Table 4-Q.

Jumper Settings

and Descriptions

STRAP CONFIGURATIONS CD OUTPUT (AT J1-8 * * )

VOLTAGE LEVEL ±1 V

ON/OFF

W11 and W14 +6/-6

W11 and W12 +6/0

W11 and W13 0/-6

W10 and W14 -6/+6

W10 and W12 0/+6

W10 and W13 -6/0

* * J1-6 when using the "Legacy" (P2) Converter

Jumper Description Notes Factory

Setting

W1 / W2 Chassis Ground W1 - 100 ohms / W2 - Short W1 Default

W5, W6, W7 RCVR Terminations All Out

W8 / W9 Legacy Config. Both Out

W10 / W11 RLSD Output Swing W11

W12 / W13 / W14 RLSD Output Swing W13

W15 / W16 DSR W15 - Test / W16 - GND W16 Default

W17 / W18 RTS Bias W17 - On / W18 - Off W18 Default

W19 / W20 RLSD W19 - Single Ended / W20 Default

W20 - Differential